Ad Swier Pike Fly hook silhouette
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Partridge of Redditch CS43BN

Ad Swier Pike Fly

Evidence reviewed October 4, 2026. Marks: P photographically · V verified · I inferred · E estimated · S speculative What they mean

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Summary

Partridge of Redditch CS43BN is the Ad Swier Pike Fly, a hook that Partridge lists in sizes 8/0, 6/0 and 4/0 V. The packet describes the hooks as barbless and for pike flies P.

The 8/0 is documented here from one packet and one hook that was probably in it I, with caliper readings for the hook. The 6/0 and 4/0 are known only from the maker’s listing.

Photographic record

5 photographs

Close side view of the looped eye of a metallic-grey fish hook, the wire bent back into a loop whose tip stops short of the shank.
IMG-1Partridge — New entry — image 1 Looped eye of the 8/0 specimen; the returning leg ends short of the shank.

How to identify it

The packet front gives the reference CS43BN and the size P. A dealer lists the 8/0 under supplier code PHCS43BN.8/0 V.

No stamped or ridged marks are visible on the shank of the photographed hook P. A loose hook of this pattern would therefore have to be identified by its shape, and its size by measurement I.

Technical profile and measurements

Features of the model, as recorded
FeatureRecordedEvidence
EyeLooped Eye, Straight / Inline
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Looped eye in line with the shank: the wire is bent back, and the returning leg ends in a flat-cut tip short of the shank, leaving an open gap P.

OBS-1OBS-2
WireExtra-Fine, Forged
ShankStandard — PlainCMP-1CMP-1 compared with 202 catalogued hooks classified Standard
BendStandard gap
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Large, smoothly rounded bend of roughly a half circle, then an S-shaped transition into a short straight point section roughly parallel to the shank P.

OBS-3
PointStandard / Spear
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No barb, cut or raised burr is visible on the point or the inside of the bend P. The packet and Partridge's listing both state barbless.

OBS-4OBS-5LBL-5SRC-1
FinishNickelled — stated on packaging
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Packet label reads BLACK NICKEL; Partridge's listing also gives black nickel. The photographed hook ranges from bright silver to dark gunmetal with the lighting P.

LBL-1SRC-1OBS-7
ConstructionBarbless

Partridge lists CS43 as forged, with a wide gape and a straight eye V. The wire looks round in the side views and no image shows a cross-section, so the forging is documented, not observed P.

Partridge calls the point a dropped point V. One dealer calls it a Bartleet point V. On the photographed hook the point is tapered and round with a fine tip, and an angle change marks where the straight point section begins P.

The shank is straight and plain, with no kinks or bait barbs visible P. Partridge gives no wire weight for CS43; one dealer describes it as standard wire V.

Measurements

Per size, with how each dimension was taken
SizeOverall lengthShank lengthGap widthBend depthWire diameterWeight
8/0Specimen S172.2 mm PcaliperMEA-161.3 mm PcaliperMEA-224.2 mm PcaliperMEA-3—1.6 mm PcaliperMEA-4—
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.

Specimens, packaging, and label

This record documents one specimen. It describes that specimen only, not every example of the model.

Front of a small packet with an orange band across the top and printed lines naming the Ad Swier Pike Fly, black nickel, size 8/0, quantity 10 and reference CS43BN.
Open full size
Back of a small white packet with three short paragraphs of printed text, the words MADE IN SINGAPORE and a barcode.
Open full size

S1 · Packet of 10, size 8/0

Size
8/0 (printed on the label)
Container
Packet
Hook condition
No visible rust, pitting, bending or surface damage. The point tip looks intact and the finish shows no plating loss or flaking (P).
Packaging condition
Very Good — light wear, fully legible
Wear
front, left edge from the orange band downward: Vertical crease in the glossy film with bright glare; a glare patch at the upper-left of the orange band. LBL-9
Wear
back, right edge: Wavy creasing along the full right edge. LBL-10
Wear
back, third paragraph: Short white diagonal scuff crossing the text near the word developed. LBL-11
Measured
size 8/0
Photographs
IMG-1IMG-2IMG-3IMG-4IMG-5

Flat sealed pouch with a printed orange band across the top of the front. The film is creased along the front left edge and the back right edge, with glare and a short white scuff across the back text. No tears or staining recorded. The back copy names Partridge of Redditch; the same packet states MADE IN SINGAPORE. No date appears in the recorded text.

What the label says

LBL-1 printed · front, white area below orange band, three centred lines from IMG-5
AD SWIER PIKE FLY
BLACK NICKEL
HOOKS
LBL-2 printed · front, left of centre from IMG-5
SIZE 8/0
LBL-3 printed · front, lower right, two lines from IMG-5
QTY 10
REF CS43BN
LBL-4 printed · back, top, first paragraph, two lines from IMG-4
Partridge of Redditch, makers by hand of the finest British fly
hook since the century- World renown for their quality.
LBL-5 printed · back, upper middle, second paragraph from IMG-4
These are for pike flies. They are barbless for easy release.
LBL-6 printed · back, upper middle, third paragraph, two lines from IMG-4
Partridge have developed a number of ranges of hooks for
specialist of fly fishing.
LBL-7 printed · back, lower centre, above barcode from IMG-4
MADE IN SINGAPORE
LBL-8 printed · back, digits beneath barcode from IMG-4
0 23534 37419 5
Trademark
Front, bottom-left corner: black outline drawing that appears to be a bird, with a small round eye at the right end and a looping curved stroke rising to the upper left. No lettering.
As entered on the specimen record
AD SWIER PIKE FLY
BLACK NICKEL
HOOKS
SIZE 8/0
QTY 10
REF CS43BN

Partridge of Redditch, makers by hand of the finest British fly
hook since the century- World renown for their quality.
These are for pike flies. They are barbless for easy release.
Partridge have developed a number of ranges of hooks for
specialist of fly fishing.
MADE IN SINGAPORE
0 23534 37419 5
Layout
Front: orange band across the top; three centred lines of name and finish; the size line left of centre; quantity and reference lines lower right. Back: three short paragraphs, then MADE IN SINGAPORE above a barcode with a digit line.
Printed marks
Barcode on the back, above the digit line transcribed here.
Later marks
None recorded.

Pattern history and manufacturer context

Design lineage

Partridge credits CS43 to Ad Swier’s design V. Partridge also states that it created its purpose-built predator hook for pike in collaboration with Ad Swier in the 1990s V.

No source consulted says when CS43 itself was introduced, or whether it is that hook.

Partridge of Redditch Read the maker’s history →

Use

  • Other

Primary application

The packet states that the hooks are for pike flies P. Partridge lists CS43 in its pike, predator and lure range V.

Collecting and buying

1.5 / 10CollectabilityRarity: Common

Rated 1.5. Partridge still lists CS43 and dealers list it, which holds the rating down; no source shows collector interest beyond use.

Basis: Current listing in the maker's pike, predator and lure range and in dealer listings; no sold results recorded.

No recorded sold results are on file for this model, so no value range is given.

Where to find

Listed in Partridge's pike, predator and lure range and by UK and Canadian dealers.

Modern equivalents and related hooks

Best matchRelated by Attribute

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

SilhouetteHook ModelMatchAnalysisCompare
Bergman-Salmon No. 8 — Salmon Hooks Dry Fly Loop Eyed silhouetteBergman-Salmon No. 8 — Salmon Hooks Dry Fly Loop Eyed54%Matches: Shank, Gap, Eye, Point, Offset +1 moreDiffers: Wire: Extra-Fine vs Fine (1X Fine); Eye Orient.: Straight / Inline vs Turned Up; Finish: Nickelled vs Black Japanned +6 moreCompare
BH No. 2, 3 — Blue Heron Spey silhouetteBH No. 2, 3 — Blue Heron Spey52%Matches: Wire, Eye, Point, Forging, OffsetDiffers: Shank: Standard vs 2X Long; Gap: Standard vs Narrow; Eye Orient.: Straight / Inline vs Turned Up +7 moreCompare
O1413 No. 3/0 — Worm Hook silhouetteO1413 No. 3/0 — Worm Hook52%Matches: Wire, Gap, Eye Orient., Point, Finish +2 moreDiffers: Bend: Other vs Round / Kendal; Shank: Standard vs 1X Long; Eye: Looped Eye vs Ball Eye +3 moreCompare
4054 — Virginia Hooks51%Matches: Shank, Gap, Offset, Application, Shank Feat.Differs: Wire: Extra-Fine vs Standard; Eye: Looped Eye vs Blind — Flatted; Eye Orient.: Straight / Inline vs N/A — Blind +4 moreCompare
37187 No. 1/0 — 37187 silhouette37187 No. 1/0 — 3718749%Matches: Shank, Eye Orient., Point, Offset, Shank Feat.Differs: Wire: Extra-Fine vs Fine (1X Fine); Gap: Standard vs Wide; Eye: Looped Eye vs Ball Eye +6 moreCompare

Sources, open questions, and record notes

Sources & Documentation

This specimen and its packaging — photographed, 5 images
Supports: measurements availablequantity per packagedesigner collaboratoreyebendbarbfinishmeasurement notesmeta titlemeta descriptionprimary search termssummaryidentificationtechnical notesprimary application

Entry last updated October 4, 2026. Entries are updated as new specimens, measurements, or documents come to light.