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Mustad Hooks – 38933

Mustad 38933 hook silhouette
Hook Reference › O. Mustad & Son Hooks › Mustad Hooks – 38933

O. Mustad & Son 38933

Mustad 389331925 or later

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

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Summary

Mustad Quality 38933 is documented here by two Key Brand boxes marked sizes 8 and 10. Both boxes identify the model as “Mustad-Special Sproat Hooks”; the checked record does not establish the complete manufactured size range or an upper production date.

Photographic record

8 photographs

Mustad 38933 Hook — pair of vintage hooks shown at full length — size 8 — turned-down eye, Sproat bend visible from top view
IMG-1Mustad 38933 Box1 Key Brand box for Mustad Quality 38933, size 10 specimen group. The label shows toning, edge wear, and localized abrasion.

How to identify it

Identify Quality 38933 by the Key Brand box label reading “O. MUSTAD & SÖN,” “OSLO – NORWAY,” “Qual. 38933,” “Hollow Point,” and “Mustad-Special Sproat Hooks.” The specification line continues “T. up small tap. eye, bronzed, 4 ex. fine wire, slightly reversed.” Sizes 8 and 10 are documented by purple numerals in the quantity/size area P.

Technical profile and measurements

Features of the model, as recorded
FeatureRecordedEvidence
EyeTapered Eye, Turned Up
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Turned-up small tapered eye, stated on the package and visible on the photographed hooks P.

LBL-2LBL-6OBS-1OBS-8
WireFine (1X Fine)CMP-3LBL-2LBL-6IMG-7IMG-8MEA-1MEA-2CMP-3 compared with 124 catalogued hooks classified Fine (1X Fine)
ShankPlainCMP-1OBS-5OBS-12CMP-1 compared with 201 catalogued hooks classified Standard, near the line with 1X Long
BendSproat, Offset / kirbed
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Smooth continuous Sproat-type bend visible in both photographed specimen groups P.

CMP-2LBL-2LBL-6OBS-2OBS-9MEA-2CMP-2 compared with 108 catalogued hooks classified Sproat
PointHollow Point
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Small raised barb close to a long hollow-profile point with a concave inner face P.

OBS-3OBS-4OBS-10OBS-11
FinishBronzed — stated on packaging
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The package states bronzed; a bronze-brown finish is visible on both specimen groups P.

LBL-2LBL-6OBS-6OBS-13

The photographed hooks have a turned-up small tapered eye, Sproat bend, plain shank, hollow point, barb, bronzed finish, and a slight reversed offset P. “Reversed” means the point is offset to the right when viewed from the eye down the shank.

The package specifies “4 ex. fine wire” P. For the site’s structured wire category, the traced silhouette falls decisively nearest Fine rather than Extra-Fine (CMP-3), so the structured field remains Fine while the historical package wording is preserved separately.

Measurements

Per size, with how each dimension was taken
SizeOverall lengthShank lengthGap widthBend depthWire diameterWeight
8Specimen S219.6 mm EcaliperMEA-1—4.8 mm EcaliperMEA-2——Not available Pmethod not recorded
10Specimen S1—————Not available Pmethod not recorded
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 physical specimens are recorded: size 10 (S1) and size 8 (S2). Only S2 has carried-forward physical-caliper measurements.

Specimens, packaging, and label

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

Mustad Quality 38933 Key Brand box marked size 10, with Oslo, Hollow Point, Sproat, and 4 ex. fine wire label text.
Open full size
Mustad 38933 Key Brand box associated with the size 10 specimen, showing the worn gold label and floral border.
Open full size

S1 · Mustad 38933 box, size 10

Size
10 (printed on the label)
Container
Box
Hook condition
Hooks appear intact with points and barbs present; minor surface variation is visible without obvious heavy rust or deformation.
Packaging condition
Good — moderate wear, legible
Wear
front label, lower edge near Made in Norway: Abrasion/discoloration obscures part of the printed lower line. LBL-4
Measured
size 10
Photographs
IMG-1IMG-2IMG-3IMG-4

IMG-3 and IMG-4 are assigned to this specimen group as probable rather than certain.

What the label says

LBL-1 trademark · front label, upper left from IMG-2
Key
Brand
LBL-2 printed · front label, main field from IMG-1IMG-2
O. MUSTAD & S[?][?]
Manufacturers
OSLO - NORWA[?]
Qual. 38933
Hollow Point
Mustad-Special Sproat Ho[?][?][?]
T. up small tap. eye, bron[?][?][?],
4 ex. fine wire, slightl[?]
reversed
100
No.
Made [?] Norw[?][?]
LBL-3 handwritten · front label, size field between 100 and No. from IMG-2
10
Trademark
Gold Key Brand wording with a skeleton-key emblem inside a floral border.
As entered on the specimen record
Key
Brand
O. MUSTAD & S[?][?]
Manufacturers
OSLO - NORWA[?]
Qual. 38933
Hollow Point
Mustad-Special Sproat Ho[?][?][?]
T. up small tap. eye, bron[?][?][?],
4 ex. fine wire, slightl[?]
reversed
100
No.
Made [?] Norw[?][?]
Layout
Gold Key Brand mark at upper left within a floral border. The right edge and lower abrasion obscure terminal characters on several lines.
Later marks
Purple size mark: 10.
Mustad Quality 38933 Key Brand box marked size 8, with complete Oslo, Hollow Point, Sproat, bronzed, and 4 ex. fine wire label.
Open full size

S2 · Mustad 38933 box, size 8

Size
8 (printed on the label)
Container
Box
Hook condition
Hooks appear intact and clean with minor surface wear or patina; points and barbs are present and no obvious deformation is visible.
Packaging condition
Good — moderate wear, legible
Wear
front label and box edges: Light toning, edge wear and small surface abrasions are visible; no major printed-text loss. LBL-8
Measured
size 8
Photographs
IMG-5IMG-6IMG-7IMG-8

The size 8 group has carried-forward physical-caliper records for overall length and gap width.

What the label says

LBL-5 trademark · front label, upper left from IMG-5
Key
Brand
LBL-6 printed · front label, main field from IMG-5
O. MUSTAD & SÖN
Manufacturers
OSLO - NORWAY
Qual. 38933
Hollow Point
Mustad-Special Sproat Hooks
T. up small tap. eye, bronzed,
4 ex. fine wire, slightly
reversed
100
No.
Made in Norway
LBL-7 handwritten · front label, size field between 100 and No. from IMG-5
8
Trademark
Gold Key Brand wording with a skeleton-key emblem inside a floral border.
As entered on the specimen record
Key
Brand
O. MUSTAD & SÖN
Manufacturers
OSLO - NORWAY
Qual. 38933
Hollow Point
Mustad-Special Sproat Hooks
T. up small tap. eye, bronzed,
4 ex. fine wire, slightly
reversed
100
No.
Made in Norway
Layout
Gold Key Brand mark at upper left within a floral border. The main label is complete and legible.
Later marks
Purple size mark: 8.

Condition

The photographed hooks are intact with points and barbs present. Minor surface variation or patina is visible, without obvious heavy rust or deformation P.

Pattern history and manufacturer context

Series

The checked packages identify Quality 38933 as “Mustad-Special Sproat Hooks.” No checked catalog or price-list source establishes the model’s first appearance, last appearance, or full production span.

Design lineage

The Sproat bend takes its name from W. H. Sproat of Ambleside V. A historical dictionary entry cites an 1866 notice in The Field stating that Hutchinson & Son of Kendal made salmon hooks bearing Sproat’s name V.

Dating

Both checked package labels use 'OSLO - NORWAY.' Oslo Municipality records that the city name changed to Oslo on 1 January 1925, establishing a post-1925 lower bound V. The checked evidence does not establish an upper production date for Quality 38933.

O. Mustad & Son Read the maker’s history →

Use

Primary application

The original package identifies the 38933 by pattern and technical specification but does not state an intended fishing or fly-tying application. A current eBay listing markets size 8 for trout fly tying V, but that modern seller description does not establish the model’s original intended use.

Collecting and buying

2.5 / 10CollectabilityRarity: Common

2.5/10. A current 100-count size-8 marketplace listing reports 92 sold, indicating ready availability and some interest V. No checked source establishes scarcity or sustained specialist competition.

Basis: SRC-3 documents a readily available 100-count size-8 listing reporting 92 sold. The checked record contains no source establishing scarcity.

Available evidence supports a conservative 2.5/10 rating: common, with interest. A current eBay listing offers 100 size-8 hooks at $12.99 and reports 92 sold V, showing ready marketplace availability and repeated demand.

No source in the checked record establishes scarcity, a limited production period, or sustained competition among specialist collectors. The rating therefore reflects availability rather than age or package condition.

Market value

Insufficient recorded sales data to estimate a reliable value.

92 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.

One eBay 100-count size-8 listing is recorded at $12.99 and reports 92 sold V. Because the finding is undated and no second sold-price source is recorded, it does not establish a defensible market range.

Where to find

A current eBay marketplace listing offers size 8 in 100-count lots V.

Label and source analysis

Size Marks and Notations

Two front labels carry purple size numerals: “10” on specimen S1 and “8” on specimen S2 P. The checked photographs do not establish whether these numerals were stamped, written, or applied by another marking method.

Modern equivalents and related hooks

Modern equivalents
HookMatchNotes
Tiemco 5212ExcellentExact modern equivalent: parabolic bend geometry, fine wire, tapered eye, designed for same light-tackle freshwater bait and finesse fly applications
Daiichi 1150Very goodSproat-variant bend; fine wire; tapered eye; excellent mechanical holding power; contemporary standard for wet fly and small streamer tying
Mustad C53SGoodModern Mustad iteration of the Sproat pattern; similar bend profile; heavier wire than 38933; suitable for general bait work but less delicate than fine-wire original

Best matchRelated by Attribute

Computed automatically from catalog data — updated as new hooks are added.

SilhouetteHook ModelMatchAnalysisCompare
3913 A No. 3 — Mustad 3913 A silhouette3913 A No. 3 — Mustad 3913 A92%Matches: Bend, Wire, Eye, Eye Orient., Point +4 moreDiffers: Gap ratio: 24.7% vs 25.3%Compare
3906B No. 1, No. 4 and No. 18 — Mustad 3906B silhouette3906B No. 1, No. 4 and No. 18 — Mustad 3906B81%Matches: Bend, Wire, Eye, Point, Finish +2 moreDiffers: Eye Orient.: Turned Up vs Turned Down; Offset: Offset / Kirbed vs Straight; Gap ratio: 24.7% vs 27.8%Compare
543 H No. 17 — Mustad 543 H80%Matches: Bend, Wire, Eye, Point, Finish +3 moreDiffers: Eye Orient.: Turned Up vs Turned DownCompare
4x TUE No. 14 — Supreme Dry Fly Hook silhouette4x TUE No. 14 — Supreme Dry Fly Hook79%Matches: Bend, Eye, Eye Orient., Point, Finish +2 moreDiffers: Wire: Fine (1X Fine) vs Extra-Fine; Offset: Offset / Kirbed vs Straight; Gap ratio: 24.7% vs 26.1%Compare
7974 No. 6, 8, 10, 12, 14; sixth handwritten mark 1[?] — Mustad 797479%Matches: Eye, Eye Orient., Point, Finish, Offset +2 moreDiffers: Bend: Sproat vs VikingCompare

ExploratoryRelated by Shape (SVG)

Ranked purely by silhouette geometry — attribute labels are ignored.

SilhouetteHook ModelMatchCompare
90240 No. 2, 4, 6, 8, 10, 12 — Mustad 90240 Low Water Salmon Hook silhouette90240 No. 2, 4, 6, 8, 10, 12 — Mustad 90240 Low Water Salmon Hook80%Compare
3671 No. 2 — Mustad 3671 Limerick silhouette3671 No. 2 — Mustad 3671 Limerick79%Compare
CBH — Cincinnati Bass Hooks silhouetteCBH — Cincinnati Bass Hooks78%Compare
3980 No. 12 — Kendal Kirby silhouette3980 No. 12 — Kendal Kirby77%Compare
3305 No. 17 — Mustad 3305 Cincinnati Bass Hooks silhouette3305 No. 17 — Mustad 3305 Cincinnati Bass Hooks76%Compare

Sources, open questions, and record notes

Sources & Documentation

This specimen and its packaging — photographed, 8 images
Supports: size documentedquantity per packageconstructioneyebendwirebarbfinishoffset kirbedcondition noteshook type applicationsecondary applicationsfly patternsmeasurement notescumulative records noteoverall lengthshank lengthgap widthbend depthshank gap ratiodating rangepackagingfun factfun fact titlemeta descriptionprimary search termsis snelledsummaryidentificationtechnical notesseries historyprimary applicationshankgap

Open questions

  1. Do you have a period Mustad catalog or price list that lists Quality 38933?The checked record does not establish the model's first catalog appearance, last catalog appearance, or complete manufactured size range.Can you help? Please send clear scans or photographs of the catalog cover, date, 38933 listing, size range, and any adjacent specification table.

Entry last updated June 11, 2026. Entries are updated as new specimens, measurements, or documents come to light.