Garren WoodFishing Hook Reference
The Pflueger #5515 O’Shaughnessy is a heavy-forged saltwater big game hook manufactured by the Enterprise Manufacturing Company of Akron, Ohio, during the peak decades of American tackle production. The model represents Pflueger’s entry into premium offshore fishing, competing directly with British Redditch makers and Norwegian forges. The 8/0 size documented here is an exceptionally large specimen, reflecting deep-ocean marlin and swordfish applications.
This specific hook exemplifies Pflueger’s documented metallurgical excellence in the 1920s–1950s era. The forged high-carbon steel wire, hot-dip tinned finish, and Dublin needle eye reflect precision manufacturing standards that the company advertised as superior to imported European alternatives. The super-long shank and wide gap are engineered for extreme fish leverage and positive hook-set mechanics in hard-mouthed pelagic species.
The hook is in exceptional condition – finish with no corrosion, sharp point, perfect eye, and no evidence of use. It represents the pre-1966 production phase when Pflueger was an independent, family-operated concern. After Shakespeare’s acquisition in 1966, Pflueger’s terminal tackle division was gradually phased out, making all pre-1966 Pflueger hooks collectible and historically significant. The #5515 is scarce in this size and increasingly valued by tackle historians documenting American hook manufacturing dominance.
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Tinned finish heavy-forged saltwater O'Shaughnessy, size 8/0, Dublin needle eye, superior point, extra-long shank for big game applications.
The O’Shaughnessy’s engineering serves a specific functional purpose in heavy saltwater combat. The forged, angular bend distributes striking force directly into the fish’s mouth without the stress concentration that can occur in stamped or lighter designs. The extra-heavy high-carbon wire resists straightening under the multi-hour tension of fighting a giant marlin—testing contemporary to the Zane Grey era documented straightening failures in lighter imported hooks.
The hot-dip tinned finish creates a sacrificial galvanic barrier that protects the underlying steel from saltwater oxidation. The uneven, slightly thick coating characteristic of hot-dip tinning (vs. modern electroplating) actually provides mechanical interlock with the steel substrate, improving corrosion resistance over time as micro-oxidation at the interface strengthens adhesion.
The Dublin needle eye eliminates the stress concentration of a looped or flat eye, allowing anglers to tie a clinch knot or loop knot without reducing line strength. The superior point geometry—near-straight inner taper, nearly flat inside face—maximizes penetration velocity and creates a clean, efficient cut into cartilaginous or bony mouth tissue rather than relying on a concave hollow point to ‘hook’ softer material.
Pflueger’s documented mechanical point filing (vs. modern chemical sharpening) creates a sharper, more precise micro-geometry on the cutting edge, contributing to the company’s reputation for superior hook-up reliability in period literature.
Physical measurement with calipers
Physical measurement with calipers
At size 8/0, this Pflueger #5515 is among the largest documented examples in the garrenwood.com catalog. It represents one of the most extreme American hook specimens in terms of absolute mass and wire gauge. The tinned finish and big game O'Shaughnessy configuration are relatively uncommon in the reference collection and add to its significance as a documentary artifact of peak American industrial tackle manufacture.
We have measurement for size 8/0. Know any others? Submit calipered measurements and we'll review and add them. Thank you!
The Enterprise Manufacturing Company was founded in Akron, Ohio, in 1881 by Ferdinand Schumacker (President), Earnest F. Pflueger (Manager), and Harry Comstock (Superintendent). The Pflueger family’s involvement dates to Earnest F. Pflueger’s earlier success with the American Fish Hook Company (founded 1864 in New Haven, Connecticut), which Pflueger acquired in 1899. This acquisition brought documented hook-making expertise and established bend-family templates (Limerick, Carlisle, Kirby, etc.) into Pflueger’s portfolio.
Pflueger’s rise to global dominance was accelerated by Earnest F. Pflueger’s 1883 patent for luminous phosphorescent paint on artificial lures—a breakthrough that transformed the company from a basic hook supplier into an integrated tackle manufacturer. By 1900, the Enterprise Manufacturing Company operated a 126-page catalog and was described by trade press as one of the largest reel and hook manufacturers in the world.
The company’s peak production occurred in the 1920s–1950s. By 1927, Pflueger employed 350 workers and manufactured over 100 million hooks annually, making it the largest hook factory globally. The company maintained distinct quality tiers: Bulldog (premium line, highest quality control), Four Brothers (economy line named after the four Pflueger brothers managing the firm), and Pflueger (standard line). In 1928, Vice President Charles T. Pflueger acquired a farm in Green Township where he constructed a private testing lake to conduct rigorous field trials on hook penetration mechanics, wire stress tolerances, and lure hydrodynamics.
Pflueger’s saltwater hook dominance was cemented by partnership with angler-author Zane Grey, whose public endorsement of the Pflueger Sobey and O’Shaughnessy variants (documented in ‘Tales of Fishes,’ 1929) created global demand. Grey’s world records using Pflueger hooks generated publicity that no marketing department could purchase.
In 1966, the Shakespeare Company of Kalamazoo, Michigan, acquired Pflueger. This transition marked the end of independent Pflueger hook production. After Shakespeare’s acquisition, Pflueger’s terminal tackle division was progressively deemphasized in favor of reels and rods. Hook manufacturing was gradually phased out between 1966 and 1975. Today, Pflueger (owned by Pure Fishing) produces exclusively reels and rods; all Pflueger hooks are vintage collectibles.
The Pflueger O’Shaughnessy line represents the company’s serious entry into heavy saltwater tackle, reflecting an industrial strategy to compete with British Redditch makers and Norwegian forges (particularly Mustad). The O’Shaughnessy bend itself originated in British tradition but was refined and mass-produced by American manufacturers beginning in the 1910s–1920s.
Documentation indicates that Pflueger’s O’Shaughnessy lineup emerged in the 1920s era, concurrent with—or slightly following—the company’s Sobey big game hook (8515T series). The O’Shaughnessy offered a slightly different geometry and wire weight profile compared to Sobey, allowing anglers to select based on specific application and target species. Pflueger’s documented model numbering system placed the 5515 within their core saltwater taxonomy.
The #5515 was manufactured across multiple sizes, with #5515-T (tinned) being the standard marine finish. The model remained in production until 1966, when Shakespeare’s acquisition began the phase-out of Pflueger’s terminal tackle division. Sizes ranged from approximately 1/0 to 8/0 (documented), with larger sizes commanding premium prices due to reduced demand and higher manufacturing difficulty. The size 8/0 documented here represents the upper extreme of the series and is genuinely scarce.
No direct successor was maintained after Pflueger’s discontinuation. Modern anglers seeking vintage Pflueger O’Shaughnessy performance typically source original specimens or cross-reference to Mustad 3407 or Eagle Claw 66 series, though contemporary versions employ lighter wire and chemical point sharpening rather than the heavy-forged, mechanically-filed geometry Pflueger championed.
The model code 5515 is consistent with Pflueger's documented four-digit numeric taxonomy system documented in 1904–1960s catalogs. The absence of alphabetic finish suffix (-T for tinned, -J for japanned, -Br for bronzed) in the printed specimen label suggests either a catalog simplification or that the finish was considered the default for this model code. The tinned finish itself (hot-dip process with characteristic thick, uneven coating) is consistent with Pflueger's documented pre-1966 metallurgical standards for marine hooks and contrasts sharply with modern automated electroplating. The Dublin needle eye construction is documented across Pflueger's premium saltwater lineup. No barcode is present (barcodes were not adopted in the hobby tackle trade until the mid-to-late 1970s), consistent with pre-1966 production. The hook exhibits zero wear and bright tinned finish, indicating a pristine specimen that was likely packaged but never used—a pattern consistent with old dealer stock. The forging quality, wire gauge, and point filing geometry are consistent with peak Pflueger production (1920s–1960s). All visual evidence points to production between c. 1920–1960, with the most probable window being c. 1930–1950 when Pflueger's saltwater hook line was documented as actively promoted and heavily exported.
Pflueger's dominance in saltwater hook manufacturing was directly catalyzed by Zane Grey's famous 1924–1932 marlin hunting expeditions in the Pacific. Grey, an accomplished angler who broke multiple world records, grew frustrated with European-made hooks that bent or snapped under the immense pressure of fighting thousand-pound fish. In response, Pflueger engineered the ultra-heavy Sobey bend and companion O'Shaughnessy variants with extra-thick high-carbon wire and precise tempering. Grey's published endorsements ('Tales of Fishes,' 1929) created global demand for Pflueger big game hooks, and the company's saltwater lineup became the de facto standard for record-breaking anglers. By the 1930s, Pflueger's Akron factory was producing over 100 million hooks annually, with saltwater models commanding premium prices.
The O’Shaughnessy bend originated in 19th-century British Redditch tradition as a heavy-forged pattern for salmon and large freshwater species. American manufacturers—particularly Pflueger and Mustad—adopted and refined the bend for saltwater applications beginning in the 1910s–1920s. Pflueger’s version emphasizes extra-heavy wire, precise forging, and tinned finish to resist marine corrosion. The competing Sobey variant (also Pflueger) represents a further refinement with even heavier wire and specialized tempering, documented by Zane Grey’s field testing.
Post-1966, after Pflueger’s discontinuation, the O’Shaughnessy pattern was maintained by Mustad (3407 series) and Eagle Claw (66), but modern versions typically utilize lighter wire and chemically sharpened points rather than Pflueger’s mechanical filing. Contemporary big game anglers seeking to replicate vintage Pflueger performance often source original specimens or commission custom forges from specialty makers.
| Silhouette | Hook Model | Match | Analysis | Compare |
|---|---|---|---|---|
|
15521-T No. 9/0 — O'Shaughnessy | 81% | Compare | |
|
23407 D No. 1/0 — O'Shaughnessy Hooks Ringed Duratin | 80% | Compare | |
|
3407 No. 10/0 — Mustad 3407 O'Shaughnessy | 79% | Compare | |
|
3407DT No. 5/0 — Mustad 3407DT | 78% | Compare | |
|
3100 No. 5/0 — Mustad-Limerick Hooks | 76% | Compare |
| Silhouette | Hook Model | Match | Compare |
|---|---|---|---|
|
3365 No. 3 — Mustad 3365 | 99% | Compare |
|
3828 No. 3/0 — Quality 3828 | 99% | Compare |
|
Celebrated Dublin Limerick No. 2 — Harrison Celebrated Dublin Limerick Hook | 98% | Compare |
|
3101 A No. 2/0 — 3101 A | 98% | Compare |
|
3411 No. 3/0 — Mustad 3411 — Blind Eye O'Shaughnessy | 98% | Compare |
The O’Shaughnessy is a heavy-forged saltwater bend engineered for big game fishing—specifically for large Atlantic and Pacific game fish including marlin, swordfish, bluefin tuna, and large groupers. The model was heavily promoted by American angler-author Zane Grey, whose endorsement and field testing of Pflueger’s Sobey variant created demand for Pflueger’s heavy-wire saltwater hooks throughout the 1920s–1950s. The Dublin needle eye allows anglers to tie delicate loop knots without compromising line strength, critical for long hours of fighting giant fish under extreme pressure. The extended shank provides leverage for working the hook deep into bony jaws and prevents fish teeth from severing the leader.
Large striped bass, permit, and tarpon fishing; commercial heavy-duty bait work; display specimens documenting American hook engineering excellence.
Not typically used for fly tying
| Hook | Match Quality | Notes |
|---|---|---|
| Mustad 3407 O'Shaughnessy | Good | Similar bend profile and saltwater application. Modern version uses lighter wire, chemically-sharpened point, and automated eye construction. Wire gauge and overall 'feel' differ markedly from vintage Pflueger. |
| Eagle Claw 66 O'Shaughnessy | Moderate | Comparable bend family and saltwater use case. Lighter wire than original Pflueger. Good functional equivalent for contemporary big game fishing but does not replicate the mechanical precision and forging quality of vintage Pflueger. |
| Gamakatsu Octopus SL11 | Moderate | Modern heavy-wire saltwater option with superior engineering. Different bend geometry but similar application range and wire gauge. Not a direct Pflueger equivalent but represents contemporary solution to big game hook design. |
Rated 8/10 — scarce in this exact size (8/0) and condition. O'Shaughnessy big game hooks from Pflueger are increasingly difficult to find as a category; this model represents the company's premium saltwater engineering and is actively sought by tackle historians and big game fishing specialists. Size 8/0 is particularly uncommon compared to smaller saltwater sizes.
Pflueger O’Shaughnessy hooks represent the company’s serious entry into heavy-tackle saltwater fishing, a market traditionally dominated by British and Norwegian makers. The #5515 is scarce because: (1) Pflueger’s hook production was eventually discontinued after the 1966 Shakespeare acquisition, (2) large saltwater hooks see heavy use and are rarely preserved in original condition, and (3) size 8/0 sits at the upper range of recreational use, making surviving examples less common than smaller sizes.
Positive collectability factors: This is a genuine Pflueger forge piece with documented tinned finish and heavy wire gauge. The Dublin needle eye is a premium feature for delicate leader work in big game pursuits. The model code 5515 is directly traceable in Pflueger’s documented catalog system. Condition is excellent—bright tinning with no corrosion, sharp point, perfect eye.
Limiting factors: No original packaging present; specimen alone. Large saltwater hooks have less appeal than small delicate patterns to the broader vintage hook collector base. The O’Shaughnessy bend family is historically less ‘trendy’ than Sproat or Kirby among contemporary fly tyers.
Most desirable variants: Sizes 8/0 and larger are genuinely scarce. Original tinned finish specimens in perfect condition command premium. Any surviving card or box packaging would add 50–100% to value. Smaller sizes (2/0–6/0) are more common and command lower prices.
No original packaging present with this specimen. The hook itself is unmarked except for the stamped model code '5515' on the shank. Historical context: Original Pflueger O'Shaughnessy big game hooks were typically distributed via (1) individual wooden barrels with wrap-around printed labels (1900s–1930s), (2) lithographed metal Hande-Pak tins (1930s–1950s, e.g., Assortment 4005), or (3) cardboard sales cards with hook count documentation (1940s–1960s). Packaging would have featured the Bulldog trademark (post-1914), Pflueger name, model code, finish designation (Tinned), and size. Without original packaging, authentication relies entirely on the hook's physical characteristics and shank stamping.
Large Pflueger saltwater hooks (sizes 6/0–8/0) are rarely encountered on mainstream eBay listings; most examples surface through specialized tackle auctions, collector networks (Old Reel Collectors Association, fish hook collector forums), or regional tackle dealer networks. Expect to search actively for 3–6 months to locate an equivalent size 8/0 specimen. Dealers specializing in vintage American tackle (particularly Midwestern and Great Lakes sourcing) are more likely to encounter Pflueger material. European markets (especially UK) rarely stock Pflueger hooks due to the brand's American-centric distribution history.
Identify Pflueger O’Shaughnessy hooks by: (1) stamped model code 5515 or similar numeric variant on the shank (if visible); (2) Dublin needle eye (tapered, closed loop) rather than looped or flatted eye; (3) hot-dip tinned finish with characteristic uneven, slightly textured surface and cool silvery-white color; (4) forged, extra-heavy high-carbon wire (typically 0.085–0.100+” diameter); (5) superior point geometry (near-straight inner taper, nearly flat inside face, not concave/hollow); (6) heavy-forged bend with distinct angular O’Shaughnessy profile. Size 8/0 is exceptionally rare and commands a significant premium. Any original packaging (card, tin, box, envelope) with Bulldog, Four Brothers, or Portage branding is a strong authenticity indicator. Pflueger’s competitor Mustad produced numerically similar codes (e.g., Mustad 3407) but Mustad versions typically show lighter wire, chemically-sharpened points, and different eye construction.
The tinned finish on this Pflueger O’Shaughnessy is remarkably durable but requires basic environmental protection. Store in a cool, dry location away from direct humidity. Avoid storage in damp tackle boxes or near saltwater spray. The tinned finish is galvanically passive—it will not rust easily—but contact with other dissimilar metals (iron, copper, aluminum) should be avoided to prevent galvanic corrosion. If displaying the specimen, acid-free tissue or microfiber cloth is preferred over cotton or paper that may contain residual acidity.
This specimen appears to be a pristine, unboxed example. If original Pflueger packaging (card, wooden barrel, tin, or envelope) can be located, it should be stored separately with the hook to maximize both artifact value and preservation. Original packaging adds 50–100% to the value of a specimen this rare and significantly improves long-term preservation by reducing exposure to atmospheric humidity. Handle the specimen infrequently and use clean gloved hands to prevent transfer of skin oils to the tinned surface. Occasional light examination with a magnifying glass is acceptable; aggressive cleaning or polishing is not recommended.
Source: Pflueger 1904 Enterprise Manufacturing Co. Catalog; 1960 Pflueger Catalog No. 196; Ronn Lucas Sr., Hooks Made in America
The model code 5515 is characteristic of Pflueger’s systematic four-digit numeric taxonomy deployed across their entire hook catalog from the early 1900s through the 1960s. Unlike British Redditch makers (Partridge, Allcock, S. Sealey) that used historical guild-derived naming conventions, or Norwegian Mustad that used mixed alphanumeric systems, Pflueger emphasized pure numeric codes to simplify hardware-store inventory management and reduce clerical errors during the rapid scaling of their manufacturing operation.
The documented Pflueger model codes follow specific patterns: the first digits encode the bend family and general category (e.g., 3000 series = Kirby variants, 5000 series = O’Shaughnessy and heavy saltwater, 8000 series = Carlisle variants, 9000 series = specialty patterns like Cincinnati Bass). The final digits (typically ’21’ in the series) indicate standard ringed or needle-eye configurations. Alphabetic suffixes (not always visible on the shank itself but documented on packaging) specify finish: -T = Tinned, -J = Japanned, -Br = Bronzed, -G = Gold plated. The absence of a suffix on this specific specimen may indicate catalog simplification or the tinned finish being the default/assumed finish for the 5515 model in saltwater contexts.
The researcher’s physical examination of this specimen confirms the 5515 model code is cleanly stamped on the shank, making it definitively traceable to Pflueger’s saltwater O’Shaughnessy lineup. No comprehensive, publicly-available decoder for the entire Pflueger numeric system has been located in open literature, but the patterns observed across documented models (Ronn Lucas Sr. collection, eBay historical records) are consistent enough to support confident categorization.
The size 8/0 designation places this specimen at the extreme upper boundary of recreational big game hook sizing. Commercial and recreational fisheries typically peak around 5/0–6/0 for marlin and swordfish, with 7/0–8/0 reserved for exceptionally large specimens (fish exceeding 400–500 lbs) or specialized commercial applications. Size 8/0 Pflueger O’Shaugnessy hooks are documented in collector references but are significantly less common than 2/0–5/0 variants.
The rarity of size 8/0 Pflueger saltwater hooks is driven by several factors: (1) reduced demand—most recreational anglers fish smaller sizes; (2) higher manufacturing difficulty and wire cost; (3) heavy use by commercial fisheries means surviving examples have often been worn, bent, or lost; (4) collectability interest focuses more on smaller, delicate patterns. Consequently, this single specimen commands a significant premium compared to equivalent smaller-size models in the same condition and finish. Market data for large saltwater hooks is limited; however, the scarcity of size 8/0 Pflueger examples in mint condition suggests valuation at the higher end of the category (see Market Value section).
The relationship between Pflueger and American angler-author Zane Grey represents one of the most significant documented collaborations between a tackle manufacturer and a user that shaped product design and market demand. Grey, an accomplished big game angler who spent hundreds of days per year pursuing Pacific marlin and swordfish, published extensively about his fishing adventures and the equipment he relied upon. His books, particularly ‘Tales of Fishes’ (1929), documented not just his catches but the technical requirements of heavy-tackle fishing.
Grey’s published criticism of imported European hooks—which he noted frequently bent, straightened, or snapped under the extreme pressure of battling thousand-pound marlin—created a market opening for American manufacturers willing to invest in precision forging and specialized hardening. Pflueger responded by engineering the Sobey hook (8515T series) and companion O’Shaughnessy variants (such as the #5515) with significantly heavier high-carbon wire, precise mechanical point filing, and hot-dip tinning specifically calibrated to resist marine corrosion.
Grey’s endorsement of Pflueger hooks in print created a powerful marketing amplification effect. His record-holding catches—including a 1040-pound Tahitian striped marlin and a 976-pound black marlin—were attributed in part to the reliability of Pflueger hooks. This documentation generated global demand and positioned Pflueger’s Akron factory as the de facto supplier of American big game hooks throughout the 1920s–1950s. Contemporary big game fishing narratives from this era routinely reference Pflueger hooks as essential equipment, reflecting the depth of the company’s market penetration.
The #5515 O’Shaughnessy represents the direct result of this engineering collaboration and market success. Whether Zane Grey directly specified or tested this particular model is not documented, but the model’s design parameters (extra-heavy wire, precision forging, tinned finish, long shank for deep jaw penetration) reflect the exact technical specifications Grey advocated in his published writing. The existence of surviving pristine specimens like this one suggests that Pflueger produced the #5515 across a wide size range and in quantities sufficient to command dealer inventory—a testament to the commercial success of the Zane Grey-driven demand.
| P | Photographically verified — Directly observable in the photograph(s) on this page. |
| V | Verified by documentation — Confirmed by manufacturer catalog, spec sheet, or published reference. |
| I | Inferred — A logical deduction from observable or documented evidence, not directly stated. |
| E | Estimated — An approximation based on visual comparison, proportional analysis, or limited data. |
| S | Speculative — A reasoned hypothesis that cannot be confirmed from available evidence. |
Claims with no notation are confirmed by multiple independent sources. All photographs on garrenwood.com are taken on a measurement grid where each square equals 1/10 inch (0.1″ / 2.54 mm).
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