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Mustad 3671 Limerick hook silhouette
Hook Reference › O. Mustad & Son Hooks › Mustad Hooks – 3671

O. Mustad & Son 3671

Mustad 3671 Limerickc. 1950–1965

Evidence reviewed October 25, 2026. Marks: P photographically · V verified · I inferred · E estimated · S speculative What they mean

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Summary

The surviving box identifies Quality 3671 as “Mustad-Limerick Hooks” and states “Made in Norway.” The photographed specimens are marked No. 2 P.

The package and specimens preserve a direct record of the model and its labeled specification. Production dates, intended fishing applications, and model scarcity are not established by the checked evidence.

Photographic record

2 photographs

Macro view of the point and barb of a Mustad Quality 3671 No. 2 hook.
IMG-1Mustad Limerick – 3671 – Point Point and barb detail of a Mustad Quality 3671 No. 2 hook, showing the long point, triangular barb, and surface wear.

How to identify it

Identify Quality 3671 by the box wording “Qual. 3671,” “Hollow Point,” and “Mustad-Limerick Hooks.” The lower specification line reads “T. up tap. eye Bronzed,” and the label also states “Made in Norway” P.

The upper-left trademark is a skeleton key with “Key” above and “Brand” below. On this box, size 2 is handwritten beside the printed “No.” field P.

Technical profile and measurements

Features of the model, as recorded
FeatureRecordedEvidence
EyeTapered Eye, Turned Up
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Turned-up eye; the terminal shank visibly narrows toward the loop P.

OBS-1LBL-2
WireFine (1X Fine), Round
Shank1X Long — Plain
BendLimerick, Standard gap
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Smooth, continuous deep bend in side view. No sharp angular corner is visible at the bottom P.

OBS-2OBS-9
PointHollow Point
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Single prominent triangular barb projecting obliquely backward and upward from the point section P.

OBS-4OBS-11
FinishBronzed — stated on packaging
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Dark bronze-brown surface with brighter highlights. The package explicitly states Bronzed P.

OBS-6OBS-13LBL-2

The available side views do not establish lateral point offset or whether the bend is forged. Wire diameter is presently a grid-derived estimate and should be confirmed with calipers before it is used as a definitive wire specification E.

Measurements

Per size, with how each dimension was taken
SizeOverall lengthShank lengthGap widthBend depthWire diameterWeightShank:gap
2Specimen S134 mm P Egrid photoMEA-123.9 mm Egrid photoMEA-210.2 mm EcaliperMEA-312.7 mm Egrid photoMEA-4 Check: The evidence record measured 12.7 mm (MEA-4).1.52 mm Egrid photoMEA-5—~2.3-2.4 : 1
Calibrated SVG True-scale preview

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.
Catalog records. Two size 2 physical specimens are recorded from the photographed box.

Specimens, packaging, and label

This record documents 2 specimens. Each describes itself only; none stands for every example of the model.

S1 · Size 2 specimen S1

Size
2 (printed on the label)
Container
Box
Hook condition
No gross deformation is visible. The point and barb detail shows mottled surface or finish wear.
Packaging condition
Good — moderate wear, legible
Wear
lid label and box, lower edge and upper-right area: Light toning and small brown marks are visible; the lower edge shows abrasion or creasing with a small lifted or torn area near the right side. LBL-4
Measured
size 2
Photographs
IMG-1IMG-2

IMG-1 is a point and barb detail assigned probably to S1. IMG-2 shows this specimen with a second size 2 hook beside the labeled box.

What the label says

LBL-1 trademark · lid label, upper left from IMG-2
Key
Brand
LBL-2 printed · lid label, main text from IMG-2
O. MUSTAD & SÖN
Manufacturers
OSLO - NORWAY
Qual. 3671
Hollow Point
Mustad-Limerick Hooks
100     T. up tap. eye Bronzed
No.     Made in Norway
LBL-3 handwritten · lid label, lower left beside No. from IMG-2
2
Trademark
Skeleton-key device with the printed words Key above and Brand below.
As entered on the specimen record
Key
Brand
O. MUSTAD & SÖN
Manufacturers
OSLO - NORWAY
Qual. 3671
Hollow Point
Mustad-Limerick Hooks
100     T. up tap. eye Bronzed
No.     Made in Norway
Layout
Skeleton-key trademark at upper left within a floral border. Main manufacturer and model text is centered; quantity and No. appear at lower left, with eye, finish, and origin wording to the right.
Later marks
2, handwritten in pink or magenta beside the printed No. field.

S2 · Size 2 specimen S2

Size
2 (printed on the label)
Container
Box
Hook condition
No gross deformation or obvious active red rust is visible in the overall photograph.
Packaging condition
Good — moderate wear, legible
Wear
lid label and box, lower edge and upper-right area: Light toning and small brown marks are visible; the lower edge shows abrasion or creasing with a small lifted or torn area near the right side. LBL-4
Photographs
IMG-2

One of two whole size 2 hooks photographed beside the labeled box in IMG-2.

What the label says

LBL-1 trademark · lid label, upper left from IMG-2
Key
Brand
LBL-2 printed · lid label, main text from IMG-2
O. MUSTAD & SÖN
Manufacturers
OSLO - NORWAY
Qual. 3671
Hollow Point
Mustad-Limerick Hooks
100     T. up tap. eye Bronzed
No.     Made in Norway
LBL-3 handwritten · lid label, lower left beside No. from IMG-2
2
Trademark
Skeleton-key device with the printed words Key above and Brand below.
As entered on the specimen record
Key
Brand
O. MUSTAD & SÖN
Manufacturers
OSLO - NORWAY
Qual. 3671
Hollow Point
Mustad-Limerick Hooks
100     T. up tap. eye Bronzed
No.     Made in Norway
Layout
Skeleton-key trademark at upper left within a floral border. Main manufacturer and model text is centered; quantity and No. appear at lower left, with eye, finish, and origin wording to the right.
Later marks
2, handwritten in pink or magenta beside the printed No. field.

Condition

Hooks show no gross deformation. S1 has mottled surface or finish wear near the point and barb; S2 shows no obvious active red rust P.

Pattern history and manufacturer context

Design lineage

The package names the pattern “Mustad-Limerick Hooks” P. The checked evidence does not establish the pattern’s introduction date, origin, or relationship to other manufacturers’ Limerick patterns.

Dating

Oslo designation (Line 3) indicates post-1925 manufacture — Christiania renamed to Oslo January 1, 1925 V. Absence of barcode: strong pre-1974 indicator P. Letterpress printing and paper stock consistent with mid-20th-century production. 'Made in Norway' notation standard on vintage export labels. 'T. up tap. eye' terminology and eight-line label format align with classic Mustad era before Signature Series transition (c. 2001–2009). Combined evidence points to 1950s–1960s window; most consistent with post-WWII Norwegian manufacturing expansion.

Use

Primary application

The surviving package does not state an intended fishing application for Quality 3671. The checked evidence documents the model, size, eye, point, finish, and country marking, but does not establish use for salmon, sea trout, wet flies, or nymphs.

Collecting and buying

6 / 10CollectabilityRarity: Uncommon

The Mustad 3671 is a genuinely scarce vintage wet fly and salmon hook with strong appeal to traditional fly tiers and Mustad historians. Tapered turned-up eye construction is a premium feature now rarely produced. Original packaging adds significant value; intact vintage boxes are highly sought.

Positive Factors: Tapered eye construction is a specialist premium feature no longer common in modern production. Limerick bend has deep cultural significance in Atlantic salmon fly tradition. Vintage Norwegian manufacture (post-1925 but pre-1975) is historically important — Norwegian steel tempering is prized by collectors. Original packaging with intact label dramatically increases value. Size No. 2 in this pattern is moderate and widely usable. ‘Made in Norway’ designation is collectible across multiple Mustad models. Bronzed finish is warm and aesthetically appealing.

Limiting Factors: The 3671 is not as iconic as models like the 3906 (Sproat) or 36890 (salmon irons), so it commands less premium than signature patterns. Limerick bend is somewhat niche compared to round bends. Moderate size (No. 2) limits appeal compared to larger salmon sizes (1/0–4/0 range) which draw higher collector interest. Pattern is still in modern production under Signature Series, reducing scarcity perception. Condition of specimen is unremarkable — no notable patina or historical use marks to increase narrative value.

Market value

Insufficient recorded sales data to estimate a reliable value.

0 sold observations recorded; 2 are needed, with the basis and date of the range, before a value is shown. Asking prices are shown as asking prices only.

Original packaging condition is primary value driver — a box in mint condition with all 100 hooks intact commands $24–28. Loose hooks without packaging typically $12–16 depending on finish condition. Tapered eye variant commands 10–15% premium over standard ball-eye equivalent. Vintage Norwegian manufacture adds 5–8% to value versus later Signature Series equivalents. eBay specialist dealers and fly-tying forums most active market; periodic sales at tackle fairs also observed.

Where to find

eBay vintage tackle listings (frequent), specialist fly-fishing forums (Singlebarbed, Classic Fly Tyers), estate sales, vintage tackle dealers in UK and Scandinavia, occasional tackle fairs.

Modern equivalents and related hooks

Modern equivalents
HookMatchNotes
Tiemco TMC 7989ExcellentModern Limerick bend, turned-down eye, comparable wire gauge. Closest direct descendant in current production.
Partridge CS10/1Very goodIrish-made Limerick bend, looped eye, heavier wire than 3671, premium traditional salmon fly hook.
Mustad Signature L70Very goodMustad's modern Limerick equivalent, logical wire code designation, no tapered eye but otherwise equivalent function.
Daiichi 1720GoodJapanese Limerick-profile salmon hook, turned-down eye, standard eye rather than tapered variant.

Sources, open questions, and record notes

Sources & Documentation

This specimen and its packaging — photographed, 2 images
Supports: quantity per packageconstructioneyebendbarbfinishcondition notesmeasurement methodmeasurement notesgap widthshank gap ratiocumulative records notepackaginghook type applicationsecondary applicationsfly patternsfun fact titlefun factmeta titlemeta descriptionprimary search termsis snelledsummaryidentificationtechnical notesdesign lineageprimary application

Open questions

  1. Do you have a Mustad catalog or price list that lists Quality 3671?The checked record has no catalog or price-list documentation for the model's production years, manufactured sizes, wire specification, or intended applications.Can you help? Please send a scan or clear photograph of the catalog or price-list page showing Quality 3671, including the publication title, date, and page number if available.

Entry last updated June 9, 2026. Entries are updated as new specimens, measurements, or documents come to light.