Hook Reference › O. Mustad & Son Hooks › Mustad 3661 — Limerick Hooks

O. Mustad & Son 3661

Limerick Hooks1925 or later I, from the documented card

Evidence reviewed October 7, 2026. Marks: P photographically · V verified · I inferred · E estimated · S speculative What they mean

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Summary

Mustad quality 3661 is a Limerick hook made without an eye. The shank narrows to a blind, square-cut end, and the label calls the hooks Tapered P.

The pattern is documented here by one Mustad sales card holding a single hook of each size from 6/0 to 12 P.

Photographic record

4 photographs

Mustad sales card with 18 blind-end Limerick hooks sewn on with red thread in two rows, each size from 6/0 to 12 stamped in purple beside it, and a gold-printed Qual. 3661 label at lower right.
IMG-1Mustad — New entry — image 1 Mustad Qual. 3661 sales card, sizes 6/0 to 12. A large pale key device is printed behind the hooks.

How to identify it

The quality number appears on the card’s label as Qual. 3661, with the wording Mustad – Limerick Hooks P. A small key between the words Key and Brand sits at the label’s upper left P.

A loose hook consistent with this pattern has no eye, a shank that narrows to a square-cut end, and a Limerick bend that turns sharply into the point P.

Technical profile and measurements

Features of the model, as recorded
FeatureRecordedEvidence
EyeBlind — Tapered Shank
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No formed eye. The shank ends blind and narrows to a square-cut end P. The label describes the hooks as Tapered P.

OBS-1OBS-2OBS-3OBS-4LBL-5
WireStandard, Round
Shank1X Long — Tapered
BendLimerick, Standard gap
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Limerick, as the label names it P. A long curve from the shank turns down sharply into the point, making the bend tighter on the point side P.

LBL-5OBS-7OBS-8
PointHollow Point
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Long, slender cut barb rising at an acute angle from the inside of the point P. A barb is present on every size on the card P.

OBS-11OBS-12
FinishBronzed — stated on packaging
Show noteHide note

Dark olive-brown to bronze color with a slight gloss P. The label says Rustproof but names no finish; bronzed is inferred from the color I.

OBS-15OBS-16LBL-5

The label specifies a Hollow Point P. On the 6/0 and 1/0 the point is long and straight, in line with the wire, and ends in a fine tip P.

The shank is long and straight, of round wire with no flats visible from the front P. On the 6/0 the straight part of the shank makes up about 70 percent of the hook’s length P.

Measurements

Per size, with how each dimension was taken
SizeOverall lengthShank lengthGap widthBend depthWire diameterWeight
7Specimen S13——————
How hook dimensions are measuredA hook outline with dimension lines for overall length, shank length, gap, bend depth, and wire diameter.Overall lengthShank lengthGapBend depthWire diameter
Overall length
Eye to the farthest point of the bend.
Shank length
Eye to the start of the bend.
Gap
Point to shank, at right angles to the shank.
Bend depth
Shank to the bottom of the bend.
Wire diameter
Across the wire, measured by caliper where possible.
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Specimens, packaging, and label

This record documents 18 specimens. Each describes itself only; none stands for every example of the model.

S1 · Sales card, size 6/0

Size
6/0 (printed on the label)
Container
Card
Hook condition
Point and barb intact; light scuffs on the bend; no corrosion visible (P).
Packaging condition
Good — moderate wear, legible
Wear
card, top right corner: Corner clipped or torn away on a diagonal outside the printed border. LBL-8
Wear
card, right margin outside border: Paler faded band with brownish staining and a slightly uneven, wavy edge. LBL-9
Wear
affixed label, left edge beside '100' and 'No.': Label edge slightly lifted, with a darker orange line of card showing beneath. LBL-10
Wear
card face, scattered: Small dark specks of soiling (e.g. below the 4/0 shank and near the '1' numeral) and loose lint fibres around the 3/0 bend. LBL-11
Photographs
IMG-1IMG-2IMG-4

Card complete with all 18 hooks, sewn on with red thread; thread intact.
Card: top right corner lost, right margin faded and stained with an uneven edge, minor specks and lint, and a fine horizontal line just above the hook bends. Label clean, its left edge slightly lifted. Back not photographed.
On this hook, fine transverse ridges run along the inside face of the point below the barb P.

What the label says

LBL-1 printed · card face, top centre, black print from IMG-1
O. MUSTAD & SÖN, FISHHOOK MANUFACTURERS
(ESTABL. 1832)
LBL-2 printed · card face, bottom centre, black print from IMG-1
OSLO - NORWAY
LBL-3 trademark · card face, centre, large pale background print behind hooks from IMG-1IMG-3
KEY BRAND
LBL-4 trademark · affixed label, upper left, above and below key device from IMG-4IMG-1
Key
Brand
LBL-5 printed · affixed label, main text block, gold print from IMG-4IMG-1
O. MUSTAD & SÖN
MANUFACTURERS
OSLO • NORWAY
Qual. 3661
Hollow Point
Mustad - Limerick Hooks
Tapered Rustproof
Made in Norway
LBL-6 printed · affixed label, lower left, gold print from IMG-4IMG-1
100
No.
LBL-7 stamp · card face, purple ink numeral beside each hook, top row then bottom row from IMG-1IMG-2IMG-3
6/0 5/0 4/0 3/0 2/0 1/0 1 2 3 4 5 6 7
8 9 10 11 12
Trademark
Pale tone-on-tone key printed large across the card center behind the hooks: an oval, lattice-filled bow behind the 2/0 and 1/0 hooks, a long stem, and the bit at lower center, with KEY BRAND in large pale serif capitals across the lower middle. The affixed label repeats a small gold key between the words Key and Brand at its upper left.
As entered on the specimen record
O. MUSTAD & SÖN, FISHHOOK MANUFACTURERS
(ESTABL. 1832)
KEY BRAND
Key
Brand
O. MUSTAD & SÖN
MANUFACTURERS
OSLO • NORWAY
Qual. 3661
Hollow Point
Mustad - Limerick Hooks
Tapered Rustproof
Made in Norway
100
No.
OSLO - NORWAY
Layout
Card: black heading at top center; OSLO - NORWAY at bottom center; KEY BRAND printed large and pale across the center behind the hooks.
Affixed label at lower right: Key and Brand above and below a key device at upper left, 100 and No. at lower left, main text block at right.
Typeface
Card heading and foot printed in black; KEY BRAND in large pale serif capitals; label printed in gold P.
Printed marks
Size 6/0 stamped in purple ink beside the hook P.
Later marks
None seen. The space after No. on the label is blank P.

Care of this specimen: Store the card flat, dry and away from direct light, and avoid catching the lifted edge of the label.

S2 · Sales card, size 5/0

Size
5/0 (printed on the label)
Container
Card
Hook condition
Present and complete on the card (P).
Packaging condition
Good — moderate wear, legible
Wear
card, top right corner: Corner clipped or torn away on a diagonal outside the printed border. LBL-8
Wear
card, right margin outside border: Paler faded band with brownish staining and a slightly uneven, wavy edge. LBL-9
Wear
affixed label, left edge beside '100' and 'No.': Label edge slightly lifted, with a darker orange line of card showing beneath. LBL-10
Wear
card face, scattered: Small dark specks of soiling (e.g. below the 4/0 shank and near the '1' numeral) and loose lint fibres around the 3/0 bend. LBL-11
Photographs
IMG-1

Mounted on the same sales card as the 6/0 hook (S1), where the card and label are transcribed. Seen only in the full-card photograph.

What the label says

LBL-1 printed · card face, top centre, black print from IMG-1
O. MUSTAD & SÖN, FISHHOOK MANUFACTURERS
(ESTABL. 1832)
LBL-2 printed · card face, bottom centre, black print from IMG-1
OSLO - NORWAY
LBL-3 trademark · card face, centre, large pale background print behind hooks from IMG-1IMG-3
KEY BRAND
LBL-4 trademark · affixed label, upper left, above and below key device from IMG-4IMG-1
Key
Brand
LBL-5 printed · affixed label, main text block, gold print from IMG-4IMG-1
O. MUSTAD & SÖN
MANUFACTURERS
OSLO • NORWAY
Qual. 3661
Hollow Point
Mustad - Limerick Hooks
Tapered Rustproof
Made in Norway
LBL-6 printed · affixed label, lower left, gold print from IMG-4IMG-1
100
No.
LBL-7 stamp · card face, purple ink numeral beside each hook, top row then bottom row from IMG-1IMG-2IMG-3
6/0 5/0 4/0 3/0 2/0 1/0 1 2 3 4 5 6 7
8 9 10 11 12
As entered on the specimen record
Printed marks
Size 5/0 stamped in purple ink beside the hook P.

S3 · Sales card, size 4/0

Size
4/0 (printed on the label)
Container
Card
Hook condition
Present and complete on the card (P).
Packaging condition
Good — moderate wear, legible
Wear
card, top right corner: Corner clipped or torn away on a diagonal outside the printed border. LBL-8
Wear
card, right margin outside border: Paler faded band with brownish staining and a slightly uneven, wavy edge. LBL-9
Wear
affixed label, left edge beside '100' and 'No.': Label edge slightly lifted, with a darker orange line of card showing beneath. LBL-10
Wear
card face, scattered: Small dark specks of soiling (e.g. below the 4/0 shank and near the '1' numeral) and loose lint fibres around the 3/0 bend. LBL-11
Photographs
IMG-1

Mounted on the same sales card as the 6/0 hook (S1), where the card and label are transcribed. Seen only in the full-card photograph.

What the label says

LBL-1 printed · card face, top centre, black print from IMG-1
O. MUSTAD & SÖN, FISHHOOK MANUFACTURERS
(ESTABL. 1832)
LBL-2 printed · card face, bottom centre, black print from IMG-1
OSLO - NORWAY
LBL-3 trademark · card face, centre, large pale background print behind hooks from IMG-1IMG-3
KEY BRAND
LBL-4 trademark · affixed label, upper left, above and below key device from IMG-4IMG-1
Key
Brand
LBL-5 printed · affixed label, main text block, gold print from IMG-4IMG-1
O. MUSTAD & SÖN
MANUFACTURERS
OSLO • NORWAY
Qual. 3661
Hollow Point
Mustad - Limerick Hooks
Tapered Rustproof
Made in Norway
LBL-6 printed · affixed label, lower left, gold print from IMG-4IMG-1
100
No.
LBL-7 stamp · card face, purple ink numeral beside each hook, top row then bottom row from IMG-1IMG-2IMG-3
6/0 5/0 4/0 3/0 2/0 1/0 1 2 3 4 5 6 7
8 9 10 11 12
As entered on the specimen record
Printed marks
Size 4/0 stamped in purple ink beside the hook P.

S4 · Sales card, size 3/0

Size
3/0 (printed on the label)
Container
Card
Hook condition
Dull gray patch at the top of the bend; brown corrosion spots along the outer bend and upper shank down to the middle tie; slight bow in the lower shank (P).
Packaging condition
Good — moderate wear, legible
Wear
card, top right corner: Corner clipped or torn away on a diagonal outside the printed border. LBL-8
Wear
card, right margin outside border: Paler faded band with brownish staining and a slightly uneven, wavy edge. LBL-9
Wear
affixed label, left edge beside '100' and 'No.': Label edge slightly lifted, with a darker orange line of card showing beneath. LBL-10
Wear
card face, scattered: Small dark specks of soiling (e.g. below the 4/0 shank and near the '1' numeral) and loose lint fibres around the 3/0 bend. LBL-11
Photographs
IMG-1IMG-3

Mounted on the same sales card as the 6/0 hook (S1), where the card and label are transcribed.

What the label says

LBL-1 printed · card face, top centre, black print from IMG-1
O. MUSTAD & SÖN, FISHHOOK MANUFACTURERS
(ESTABL. 1832)
LBL-2 printed · card face, bottom centre, black print from IMG-1
OSLO - NORWAY
LBL-3 trademark · card face, centre, large pale background print behind hooks from IMG-1IMG-3
KEY BRAND
LBL-4 trademark · affixed label, upper left, above and below key device from IMG-4IMG-1
Key
Brand
LBL-5 printed · affixed label, main text block, gold print from IMG-4IMG-1
O. MUSTAD & SÖN
MANUFACTURERS
OSLO • NORWAY
Qual. 3661
Hollow Point
Mustad - Limerick Hooks
Tapered Rustproof
Made in Norway
LBL-6 printed · affixed label, lower left, gold print from IMG-4IMG-1
100
No.
LBL-7 stamp · card face, purple ink numeral beside each hook, top row then bottom row from IMG-1IMG-2IMG-3
6/0 5/0 4/0 3/0 2/0 1/0 1 2 3 4 5 6 7
8 9 10 11 12
As entered on the specimen record
Printed marks
Size 3/0 stamped in purple ink beside the hook P.

Care of this specimen: Keep dry and avoid rubbing the corroded areas.

S5 · Sales card, size 2/0

Size
2/0 (printed on the label)
Container
Card
Hook condition
Brown corrosion and roughened surface on the bend near the point and on the lower shank around the lowest tie (P).
Packaging condition
Good — moderate wear, legible
Wear
card, top right corner: Corner clipped or torn away on a diagonal outside the printed border. LBL-8
Wear
card, right margin outside border: Paler faded band with brownish staining and a slightly uneven, wavy edge. LBL-9
Wear
affixed label, left edge beside '100' and 'No.': Label edge slightly lifted, with a darker orange line of card showing beneath. LBL-10
Wear
card face, scattered: Small dark specks of soiling (e.g. below the 4/0 shank and near the '1' numeral) and loose lint fibres around the 3/0 bend. LBL-11
Photographs
IMG-1IMG-3

Mounted on the same sales card as the 6/0 hook (S1), where the card and label are transcribed. The blind end narrows to a square-cut end with no marks visible P.

What the label says

LBL-1 printed · card face, top centre, black print from IMG-1
O. MUSTAD & SÖN, FISHHOOK MANUFACTURERS
(ESTABL. 1832)
LBL-2 printed · card face, bottom centre, black print from IMG-1
OSLO - NORWAY
LBL-3 trademark · card face, centre, large pale background print behind hooks from IMG-1IMG-3
KEY BRAND
LBL-4 trademark · affixed label, upper left, above and below key device from IMG-4IMG-1
Key
Brand
LBL-5 printed · affixed label, main text block, gold print from IMG-4IMG-1
O. MUSTAD & SÖN
MANUFACTURERS
OSLO • NORWAY
Qual. 3661
Hollow Point
Mustad - Limerick Hooks
Tapered Rustproof
Made in Norway
LBL-6 printed · affixed label, lower left, gold print from IMG-4IMG-1
100
No.
LBL-7 stamp · card face, purple ink numeral beside each hook, top row then bottom row from IMG-1IMG-2IMG-3
6/0 5/0 4/0 3/0 2/0 1/0 1 2 3 4 5 6 7
8 9 10 11 12
As entered on the specimen record
Printed marks
Size 2/0 stamped in purple ink beside the hook P.

Care of this specimen: Keep dry and avoid rubbing the corroded areas.

S6 · Sales card, size 1/0

Size
1/0 (printed on the label)
Container
Card
Hook condition
Point tip intact; finish even and glossy (P).
Packaging condition
Good — moderate wear, legible
Wear
card, top right corner: Corner clipped or torn away on a diagonal outside the printed border. LBL-8
Wear
card, right margin outside border: Paler faded band with brownish staining and a slightly uneven, wavy edge. LBL-9
Wear
affixed label, left edge beside '100' and 'No.': Label edge slightly lifted, with a darker orange line of card showing beneath. LBL-10
Wear
card face, scattered: Small dark specks of soiling (e.g. below the 4/0 shank and near the '1' numeral) and loose lint fibres around the 3/0 bend. LBL-11
Photographs
IMG-1IMG-3

Mounted on the same sales card as the 6/0 hook (S1), where the card and label are transcribed. The inside face of the point is faceted below the barb, and the blind end is smooth and square-cut P.

What the label says

LBL-1 printed · card face, top centre, black print from IMG-1
O. MUSTAD & SÖN, FISHHOOK MANUFACTURERS
(ESTABL. 1832)
LBL-2 printed · card face, bottom centre, black print from IMG-1
OSLO - NORWAY
LBL-3 trademark · card face, centre, large pale background print behind hooks from IMG-1IMG-3
KEY BRAND
LBL-4 trademark · affixed label, upper left, above and below key device from IMG-4IMG-1
Key
Brand
LBL-5 printed · affixed label, main text block, gold print from IMG-4IMG-1
O. MUSTAD & SÖN
MANUFACTURERS
OSLO • NORWAY
Qual. 3661
Hollow Point
Mustad - Limerick Hooks
Tapered Rustproof
Made in Norway
LBL-6 printed · affixed label, lower left, gold print from IMG-4IMG-1
100
No.
LBL-7 stamp · card face, purple ink numeral beside each hook, top row then bottom row from IMG-1IMG-2IMG-3
6/0 5/0 4/0 3/0 2/0 1/0 1 2 3 4 5 6 7
8 9 10 11 12
As entered on the specimen record
Printed marks
Size 1/0 stamped in purple ink beside the hook P.

S7 · Sales card, size 1

Size
1 (printed on the label)
Container
Card
Hook condition
Clean apart from dust specks; point and barb intact (P).
Packaging condition
Good — moderate wear, legible
Wear
card, top right corner: Corner clipped or torn away on a diagonal outside the printed border. LBL-8
Wear
card, right margin outside border: Paler faded band with brownish staining and a slightly uneven, wavy edge. LBL-9
Wear
affixed label, left edge beside '100' and 'No.': Label edge slightly lifted, with a darker orange line of card showing beneath. LBL-10
Wear
card face, scattered: Small dark specks of soiling (e.g. below the 4/0 shank and near the '1' numeral) and loose lint fibres around the 3/0 bend. LBL-11
Photographs
IMG-1IMG-3

Mounted on the same sales card as the 6/0 hook (S1), where the card and label are transcribed. The blind end is smooth and square-cut P.

What the label says

LBL-1 printed · card face, top centre, black print from IMG-1
O. MUSTAD & SÖN, FISHHOOK MANUFACTURERS
(ESTABL. 1832)
LBL-2 printed · card face, bottom centre, black print from IMG-1
OSLO - NORWAY
LBL-3 trademark · card face, centre, large pale background print behind hooks from IMG-1IMG-3
KEY BRAND
LBL-4 trademark · affixed label, upper left, above and below key device from IMG-4IMG-1
Key
Brand
LBL-5 printed · affixed label, main text block, gold print from IMG-4IMG-1
O. MUSTAD & SÖN
MANUFACTURERS
OSLO • NORWAY
Qual. 3661
Hollow Point
Mustad - Limerick Hooks
Tapered Rustproof
Made in Norway
LBL-6 printed · affixed label, lower left, gold print from IMG-4IMG-1
100
No.
LBL-7 stamp · card face, purple ink numeral beside each hook, top row then bottom row from IMG-1IMG-2IMG-3
6/0 5/0 4/0 3/0 2/0 1/0 1 2 3 4 5 6 7
8 9 10 11 12
As entered on the specimen record
Printed marks
Size 1 stamped in purple ink beside the hook P.

S8 · Sales card, size 2

Size
2 (printed on the label)
Container
Card
Hook condition
Present and complete on the card (P).
Packaging condition
Good — moderate wear, legible
Wear
card, top right corner: Corner clipped or torn away on a diagonal outside the printed border. LBL-8
Wear
card, right margin outside border: Paler faded band with brownish staining and a slightly uneven, wavy edge. LBL-9
Wear
affixed label, left edge beside '100' and 'No.': Label edge slightly lifted, with a darker orange line of card showing beneath. LBL-10
Wear
card face, scattered: Small dark specks of soiling (e.g. below the 4/0 shank and near the '1' numeral) and loose lint fibres around the 3/0 bend. LBL-11
Photographs
IMG-1

Mounted on the same sales card as the 6/0 hook (S1), where the card and label are transcribed. Seen only in the full-card photograph.

What the label says

LBL-1 printed · card face, top centre, black print from IMG-1
O. MUSTAD & SÖN, FISHHOOK MANUFACTURERS
(ESTABL. 1832)
LBL-2 printed · card face, bottom centre, black print from IMG-1
OSLO - NORWAY
LBL-3 trademark · card face, centre, large pale background print behind hooks from IMG-1IMG-3
KEY BRAND
LBL-4 trademark · affixed label, upper left, above and below key device from IMG-4IMG-1
Key
Brand
LBL-5 printed · affixed label, main text block, gold print from IMG-4IMG-1
O. MUSTAD & SÖN
MANUFACTURERS
OSLO • NORWAY
Qual. 3661
Hollow Point
Mustad - Limerick Hooks
Tapered Rustproof
Made in Norway
LBL-6 printed · affixed label, lower left, gold print from IMG-4IMG-1
100
No.
LBL-7 stamp · card face, purple ink numeral beside each hook, top row then bottom row from IMG-1IMG-2IMG-3
6/0 5/0 4/0 3/0 2/0 1/0 1 2 3 4 5 6 7
8 9 10 11 12
As entered on the specimen record
Printed marks
Size 2 stamped in purple ink beside the hook P.

S9 · Sales card, size 3

Size
3 (printed on the label)
Container
Card
Hook condition
Present and complete on the card (P).
Packaging condition
Good — moderate wear, legible
Wear
card, top right corner: Corner clipped or torn away on a diagonal outside the printed border. LBL-8
Wear
card, right margin outside border: Paler faded band with brownish staining and a slightly uneven, wavy edge. LBL-9
Wear
affixed label, left edge beside '100' and 'No.': Label edge slightly lifted, with a darker orange line of card showing beneath. LBL-10
Wear
card face, scattered: Small dark specks of soiling (e.g. below the 4/0 shank and near the '1' numeral) and loose lint fibres around the 3/0 bend. LBL-11
Photographs
IMG-1

Mounted on the same sales card as the 6/0 hook (S1), where the card and label are transcribed. Seen only in the full-card photograph.

What the label says

LBL-1 printed · card face, top centre, black print from IMG-1
O. MUSTAD & SÖN, FISHHOOK MANUFACTURERS
(ESTABL. 1832)
LBL-2 printed · card face, bottom centre, black print from IMG-1
OSLO - NORWAY
LBL-3 trademark · card face, centre, large pale background print behind hooks from IMG-1IMG-3
KEY BRAND
LBL-4 trademark · affixed label, upper left, above and below key device from IMG-4IMG-1
Key
Brand
LBL-5 printed · affixed label, main text block, gold print from IMG-4IMG-1
O. MUSTAD & SÖN
MANUFACTURERS
OSLO • NORWAY
Qual. 3661
Hollow Point
Mustad - Limerick Hooks
Tapered Rustproof
Made in Norway
LBL-6 printed · affixed label, lower left, gold print from IMG-4IMG-1
100
No.
LBL-7 stamp · card face, purple ink numeral beside each hook, top row then bottom row from IMG-1IMG-2IMG-3
6/0 5/0 4/0 3/0 2/0 1/0 1 2 3 4 5 6 7
8 9 10 11 12
As entered on the specimen record
Printed marks
Size 3 stamped in purple ink beside the hook P.

S10 · Sales card, size 4

Size
4 (printed on the label)
Container
Card
Hook condition
Present and complete on the card (P).
Packaging condition
Good — moderate wear, legible
Wear
card, top right corner: Corner clipped or torn away on a diagonal outside the printed border. LBL-8
Wear
card, right margin outside border: Paler faded band with brownish staining and a slightly uneven, wavy edge. LBL-9
Wear
affixed label, left edge beside '100' and 'No.': Label edge slightly lifted, with a darker orange line of card showing beneath. LBL-10
Wear
card face, scattered: Small dark specks of soiling (e.g. below the 4/0 shank and near the '1' numeral) and loose lint fibres around the 3/0 bend. LBL-11
Photographs
IMG-1

Mounted on the same sales card as the 6/0 hook (S1), where the card and label are transcribed. A stepped highlight near the blind end may be transverse marks; the photograph does not resolve it P.

What the label says

LBL-1 printed · card face, top centre, black print from IMG-1
O. MUSTAD & SÖN, FISHHOOK MANUFACTURERS
(ESTABL. 1832)
LBL-2 printed · card face, bottom centre, black print from IMG-1
OSLO - NORWAY
LBL-3 trademark · card face, centre, large pale background print behind hooks from IMG-1IMG-3
KEY BRAND
LBL-4 trademark · affixed label, upper left, above and below key device from IMG-4IMG-1
Key
Brand
LBL-5 printed · affixed label, main text block, gold print from IMG-4IMG-1
O. MUSTAD & SÖN
MANUFACTURERS
OSLO • NORWAY
Qual. 3661
Hollow Point
Mustad - Limerick Hooks
Tapered Rustproof
Made in Norway
LBL-6 printed · affixed label, lower left, gold print from IMG-4IMG-1
100
No.
LBL-7 stamp · card face, purple ink numeral beside each hook, top row then bottom row from IMG-1IMG-2IMG-3
6/0 5/0 4/0 3/0 2/0 1/0 1 2 3 4 5 6 7
8 9 10 11 12
As entered on the specimen record
Printed marks
Size 4 stamped in purple ink beside the hook P.

S11 · Sales card, size 5

Size
5 (printed on the label)
Container
Card
Hook condition
Present and complete on the card (P).
Packaging condition
Good — moderate wear, legible
Wear
card, top right corner: Corner clipped or torn away on a diagonal outside the printed border. LBL-8
Wear
card, right margin outside border: Paler faded band with brownish staining and a slightly uneven, wavy edge. LBL-9
Wear
affixed label, left edge beside '100' and 'No.': Label edge slightly lifted, with a darker orange line of card showing beneath. LBL-10
Wear
card face, scattered: Small dark specks of soiling (e.g. below the 4/0 shank and near the '1' numeral) and loose lint fibres around the 3/0 bend. LBL-11
Photographs
IMG-1

Mounted on the same sales card as the 6/0 hook (S1), where the card and label are transcribed. A stepped, interrupted highlight near the blind end may be transverse marks; the photograph does not resolve it P.

What the label says

LBL-1 printed · card face, top centre, black print from IMG-1
O. MUSTAD & SÖN, FISHHOOK MANUFACTURERS
(ESTABL. 1832)
LBL-2 printed · card face, bottom centre, black print from IMG-1
OSLO - NORWAY
LBL-3 trademark · card face, centre, large pale background print behind hooks from IMG-1IMG-3
KEY BRAND
LBL-4 trademark · affixed label, upper left, above and below key device from IMG-4IMG-1
Key
Brand
LBL-5 printed · affixed label, main text block, gold print from IMG-4IMG-1
O. MUSTAD & SÖN
MANUFACTURERS
OSLO • NORWAY
Qual. 3661
Hollow Point
Mustad - Limerick Hooks
Tapered Rustproof
Made in Norway
LBL-6 printed · affixed label, lower left, gold print from IMG-4IMG-1
100
No.
LBL-7 stamp · card face, purple ink numeral beside each hook, top row then bottom row from IMG-1IMG-2IMG-3
6/0 5/0 4/0 3/0 2/0 1/0 1 2 3 4 5 6 7
8 9 10 11 12
As entered on the specimen record
Printed marks
Size 5 stamped in purple ink beside the hook P.

S12 · Sales card, size 6

Size
6 (printed on the label)
Container
Card
Hook condition
Present and complete on the card (P).
Packaging condition
Good — moderate wear, legible
Wear
card, top right corner: Corner clipped or torn away on a diagonal outside the printed border. LBL-8
Wear
card, right margin outside border: Paler faded band with brownish staining and a slightly uneven, wavy edge. LBL-9
Wear
affixed label, left edge beside '100' and 'No.': Label edge slightly lifted, with a darker orange line of card showing beneath. LBL-10
Wear
card face, scattered: Small dark specks of soiling (e.g. below the 4/0 shank and near the '1' numeral) and loose lint fibres around the 3/0 bend. LBL-11
Photographs
IMG-1

Mounted on the same sales card as the 6/0 hook (S1), where the card and label are transcribed. Seen only in the full-card photograph.

What the label says

LBL-1 printed · card face, top centre, black print from IMG-1
O. MUSTAD & SÖN, FISHHOOK MANUFACTURERS
(ESTABL. 1832)
LBL-2 printed · card face, bottom centre, black print from IMG-1
OSLO - NORWAY
LBL-3 trademark · card face, centre, large pale background print behind hooks from IMG-1IMG-3
KEY BRAND
LBL-4 trademark · affixed label, upper left, above and below key device from IMG-4IMG-1
Key
Brand
LBL-5 printed · affixed label, main text block, gold print from IMG-4IMG-1
O. MUSTAD & SÖN
MANUFACTURERS
OSLO • NORWAY
Qual. 3661
Hollow Point
Mustad - Limerick Hooks
Tapered Rustproof
Made in Norway
LBL-6 printed · affixed label, lower left, gold print from IMG-4IMG-1
100
No.
LBL-7 stamp · card face, purple ink numeral beside each hook, top row then bottom row from IMG-1IMG-2IMG-3
6/0 5/0 4/0 3/0 2/0 1/0 1 2 3 4 5 6 7
8 9 10 11 12
As entered on the specimen record
Printed marks
Size 6 stamped in purple ink beside the hook P.

S13 · Sales card, size 7

Size
7 (printed on the label)
Container
Card
Hook condition
Complete; no damage visible at this scale (P).
Packaging condition
Good — moderate wear, legible
Wear
card, top right corner: Corner clipped or torn away on a diagonal outside the printed border. LBL-8
Wear
card, right margin outside border: Paler faded band with brownish staining and a slightly uneven, wavy edge. LBL-9
Wear
affixed label, left edge beside '100' and 'No.': Label edge slightly lifted, with a darker orange line of card showing beneath. LBL-10
Wear
card face, scattered: Small dark specks of soiling (e.g. below the 4/0 shank and near the '1' numeral) and loose lint fibres around the 3/0 bend. LBL-11
Measured
size 7
Photographs
IMG-1

Mounted on the same sales card as the 6/0 hook (S1), where the card and label are transcribed. The shank is sewn over the card's printed right border, so this hook is not measured.

What the label says

LBL-1 printed · card face, top centre, black print from IMG-1
O. MUSTAD & SÖN, FISHHOOK MANUFACTURERS
(ESTABL. 1832)
LBL-2 printed · card face, bottom centre, black print from IMG-1
OSLO - NORWAY
LBL-3 trademark · card face, centre, large pale background print behind hooks from IMG-1IMG-3
KEY BRAND
LBL-4 trademark · affixed label, upper left, above and below key device from IMG-4IMG-1
Key
Brand
LBL-5 printed · affixed label, main text block, gold print from IMG-4IMG-1
O. MUSTAD & SÖN
MANUFACTURERS
OSLO • NORWAY
Qual. 3661
Hollow Point
Mustad - Limerick Hooks
Tapered Rustproof
Made in Norway
LBL-6 printed · affixed label, lower left, gold print from IMG-4IMG-1
100
No.
LBL-7 stamp · card face, purple ink numeral beside each hook, top row then bottom row from IMG-1IMG-2IMG-3
6/0 5/0 4/0 3/0 2/0 1/0 1 2 3 4 5 6 7
8 9 10 11 12
As entered on the specimen record
Printed marks
Size 7 stamped in purple ink beside the hook P.

S14 · Sales card, size 8

Size
8 (printed on the label)
Container
Card
Hook condition
Present and complete on the card (P).
Packaging condition
Good — moderate wear, legible
Wear
card, top right corner: Corner clipped or torn away on a diagonal outside the printed border. LBL-8
Wear
card, right margin outside border: Paler faded band with brownish staining and a slightly uneven, wavy edge. LBL-9
Wear
affixed label, left edge beside '100' and 'No.': Label edge slightly lifted, with a darker orange line of card showing beneath. LBL-10
Wear
card face, scattered: Small dark specks of soiling (e.g. below the 4/0 shank and near the '1' numeral) and loose lint fibres around the 3/0 bend. LBL-11
Photographs
IMG-1

Mounted on the same sales card as the 6/0 hook (S1), where the card and label are transcribed. Seen only in the full-card photograph.

What the label says

LBL-1 printed · card face, top centre, black print from IMG-1
O. MUSTAD & SÖN, FISHHOOK MANUFACTURERS
(ESTABL. 1832)
LBL-2 printed · card face, bottom centre, black print from IMG-1
OSLO - NORWAY
LBL-3 trademark · card face, centre, large pale background print behind hooks from IMG-1IMG-3
KEY BRAND
LBL-4 trademark · affixed label, upper left, above and below key device from IMG-4IMG-1
Key
Brand
LBL-5 printed · affixed label, main text block, gold print from IMG-4IMG-1
O. MUSTAD & SÖN
MANUFACTURERS
OSLO • NORWAY
Qual. 3661
Hollow Point
Mustad - Limerick Hooks
Tapered Rustproof
Made in Norway
LBL-6 printed · affixed label, lower left, gold print from IMG-4IMG-1
100
No.
LBL-7 stamp · card face, purple ink numeral beside each hook, top row then bottom row from IMG-1IMG-2IMG-3
6/0 5/0 4/0 3/0 2/0 1/0 1 2 3 4 5 6 7
8 9 10 11 12
As entered on the specimen record
Printed marks
Size 8 stamped in purple ink beside the hook P.

S15 · Sales card, size 9

Size
9 (printed on the label)
Container
Card
Hook condition
Present and complete on the card (P).
Packaging condition
Good — moderate wear, legible
Wear
card, top right corner: Corner clipped or torn away on a diagonal outside the printed border. LBL-8
Wear
card, right margin outside border: Paler faded band with brownish staining and a slightly uneven, wavy edge. LBL-9
Wear
affixed label, left edge beside '100' and 'No.': Label edge slightly lifted, with a darker orange line of card showing beneath. LBL-10
Wear
card face, scattered: Small dark specks of soiling (e.g. below the 4/0 shank and near the '1' numeral) and loose lint fibres around the 3/0 bend. LBL-11
Photographs
IMG-1

Mounted on the same sales card as the 6/0 hook (S1), where the card and label are transcribed. Seen only in the full-card photograph.

What the label says

LBL-1 printed · card face, top centre, black print from IMG-1
O. MUSTAD & SÖN, FISHHOOK MANUFACTURERS
(ESTABL. 1832)
LBL-2 printed · card face, bottom centre, black print from IMG-1
OSLO - NORWAY
LBL-3 trademark · card face, centre, large pale background print behind hooks from IMG-1IMG-3
KEY BRAND
LBL-4 trademark · affixed label, upper left, above and below key device from IMG-4IMG-1
Key
Brand
LBL-5 printed · affixed label, main text block, gold print from IMG-4IMG-1
O. MUSTAD & SÖN
MANUFACTURERS
OSLO • NORWAY
Qual. 3661
Hollow Point
Mustad - Limerick Hooks
Tapered Rustproof
Made in Norway
LBL-6 printed · affixed label, lower left, gold print from IMG-4IMG-1
100
No.
LBL-7 stamp · card face, purple ink numeral beside each hook, top row then bottom row from IMG-1IMG-2IMG-3
6/0 5/0 4/0 3/0 2/0 1/0 1 2 3 4 5 6 7
8 9 10 11 12
As entered on the specimen record
Printed marks
Size 9 stamped in purple ink beside the hook P.

S16 · Sales card, size 10

Size
10 (printed on the label)
Container
Card
Hook condition
Present and complete on the card (P).
Packaging condition
Good — moderate wear, legible
Wear
card, top right corner: Corner clipped or torn away on a diagonal outside the printed border. LBL-8
Wear
card, right margin outside border: Paler faded band with brownish staining and a slightly uneven, wavy edge. LBL-9
Wear
affixed label, left edge beside '100' and 'No.': Label edge slightly lifted, with a darker orange line of card showing beneath. LBL-10
Wear
card face, scattered: Small dark specks of soiling (e.g. below the 4/0 shank and near the '1' numeral) and loose lint fibres around the 3/0 bend. LBL-11
Photographs
IMG-1

Mounted on the same sales card as the 6/0 hook (S1), where the card and label are transcribed. Seen only in the full-card photograph.

What the label says

LBL-1 printed · card face, top centre, black print from IMG-1
O. MUSTAD & SÖN, FISHHOOK MANUFACTURERS
(ESTABL. 1832)
LBL-2 printed · card face, bottom centre, black print from IMG-1
OSLO - NORWAY
LBL-3 trademark · card face, centre, large pale background print behind hooks from IMG-1IMG-3
KEY BRAND
LBL-4 trademark · affixed label, upper left, above and below key device from IMG-4IMG-1
Key
Brand
LBL-5 printed · affixed label, main text block, gold print from IMG-4IMG-1
O. MUSTAD & SÖN
MANUFACTURERS
OSLO • NORWAY
Qual. 3661
Hollow Point
Mustad - Limerick Hooks
Tapered Rustproof
Made in Norway
LBL-6 printed · affixed label, lower left, gold print from IMG-4IMG-1
100
No.
LBL-7 stamp · card face, purple ink numeral beside each hook, top row then bottom row from IMG-1IMG-2IMG-3
6/0 5/0 4/0 3/0 2/0 1/0 1 2 3 4 5 6 7
8 9 10 11 12
As entered on the specimen record
Printed marks
Size 10 stamped in purple ink beside the hook P.

S17 · Sales card, size 11

Size
11 (printed on the label)
Container
Card
Hook condition
Present and complete on the card (P).
Packaging condition
Good — moderate wear, legible
Wear
card, top right corner: Corner clipped or torn away on a diagonal outside the printed border. LBL-8
Wear
card, right margin outside border: Paler faded band with brownish staining and a slightly uneven, wavy edge. LBL-9
Wear
affixed label, left edge beside '100' and 'No.': Label edge slightly lifted, with a darker orange line of card showing beneath. LBL-10
Wear
card face, scattered: Small dark specks of soiling (e.g. below the 4/0 shank and near the '1' numeral) and loose lint fibres around the 3/0 bend. LBL-11
Photographs
IMG-1IMG-3

Mounted on the same sales card as the 6/0 hook (S1), where the card and label are transcribed.

What the label says

LBL-1 printed · card face, top centre, black print from IMG-1
O. MUSTAD & SÖN, FISHHOOK MANUFACTURERS
(ESTABL. 1832)
LBL-2 printed · card face, bottom centre, black print from IMG-1
OSLO - NORWAY
LBL-3 trademark · card face, centre, large pale background print behind hooks from IMG-1IMG-3
KEY BRAND
LBL-4 trademark · affixed label, upper left, above and below key device from IMG-4IMG-1
Key
Brand
LBL-5 printed · affixed label, main text block, gold print from IMG-4IMG-1
O. MUSTAD & SÖN
MANUFACTURERS
OSLO • NORWAY
Qual. 3661
Hollow Point
Mustad - Limerick Hooks
Tapered Rustproof
Made in Norway
LBL-6 printed · affixed label, lower left, gold print from IMG-4IMG-1
100
No.
LBL-7 stamp · card face, purple ink numeral beside each hook, top row then bottom row from IMG-1IMG-2IMG-3
6/0 5/0 4/0 3/0 2/0 1/0 1 2 3 4 5 6 7
8 9 10 11 12
As entered on the specimen record
Printed marks
Size 11 stamped in purple ink beside the hook P.

S18 · Sales card, size 12

Size
12 (printed on the label)
Container
Card
Hook condition
Complete on the card, with the barb clearly raised (P).
Packaging condition
Good — moderate wear, legible
Wear
card, top right corner: Corner clipped or torn away on a diagonal outside the printed border. LBL-8
Wear
card, right margin outside border: Paler faded band with brownish staining and a slightly uneven, wavy edge. LBL-9
Wear
affixed label, left edge beside '100' and 'No.': Label edge slightly lifted, with a darker orange line of card showing beneath. LBL-10
Wear
card face, scattered: Small dark specks of soiling (e.g. below the 4/0 shank and near the '1' numeral) and loose lint fibres around the 3/0 bend. LBL-11
Photographs
IMG-1IMG-3

Mounted on the same sales card as the 6/0 hook (S1), where the card and label are transcribed.

What the label says

LBL-1 printed · card face, top centre, black print from IMG-1
O. MUSTAD & SÖN, FISHHOOK MANUFACTURERS
(ESTABL. 1832)
LBL-2 printed · card face, bottom centre, black print from IMG-1
OSLO - NORWAY
LBL-3 trademark · card face, centre, large pale background print behind hooks from IMG-1IMG-3
KEY BRAND
LBL-4 trademark · affixed label, upper left, above and below key device from IMG-4IMG-1
Key
Brand
LBL-5 printed · affixed label, main text block, gold print from IMG-4IMG-1
O. MUSTAD & SÖN
MANUFACTURERS
OSLO • NORWAY
Qual. 3661
Hollow Point
Mustad - Limerick Hooks
Tapered Rustproof
Made in Norway
LBL-6 printed · affixed label, lower left, gold print from IMG-4IMG-1
100
No.
LBL-7 stamp · card face, purple ink numeral beside each hook, top row then bottom row from IMG-1IMG-2IMG-3
6/0 5/0 4/0 3/0 2/0 1/0 1 2 3 4 5 6 7
8 9 10 11 12
As entered on the specimen record
Printed marks
Size 12 stamped in purple ink beside the hook P.

Pattern history and manufacturer context

Dating

The card foot and the label both give the maker's address as Oslo P. The city's name changed from Kristiania to Oslo with effect from 1 January 1925 V, so the card was printed in 1925 or later I. No evidence yet sets an end date.

O. Mustad & Son — Mustad dates the company to 1832, founded in the village of Gjøvik, Norway V. The card heading gives the same founding year P. Read the maker’s history →
A key for fish-hooks. In May 1908 Mustad filed a design-only US trademark for fish-hooks, coded as a key with a circular, oval or lobed head. It was registered that September V. Whether it matches the key printed on the documented card is not confirmed.

Use

  • Salmon
  • Sea trout

Modern equivalents and related hooks

Sources, open questions, and record notes

Sources & Documentation

This specimen and its packaging — photographed, 4 images
Supports: constructionis snelledcountry of originsub brandsize documentedeyebendbarbfinishmeasurements availablemeasurement methodmeasurement notesdating rangemanufacturer period contextpackagingfun factmeta titlemeta descriptionprimary search termssummarytechnical notesidentification

Entry last updated October 7, 2026. Entries are updated as new specimens, measurements, or documents come to light.