Japanese Type 30 Service Bayonet

Images

Specifications

Identification

This artifact is an original Imperial Japanese Type 30 service bayonet in the early hooked-quillon configuration. Its regulation-length fullered blade, arsenal-stamped ricasso, contoured screw-fastened grips, bird's-head pommel, muzzle ring, and functional locking system identify it as an Army service weapon. It provides a useful comparison with the site's separate Type 30-pattern school training bayonet, which follows the same general form but was made outside regular arsenal standards.

The Type 30 was adopted in the thirtieth year of the Meiji reign, 1897. Although introduced with the Type 30 rifle, its standardized mounting system allowed the bayonet to remain in service with the Type 38, Type I, and Type 99 rifles through the end of the Second World War.

Arsenal Mark and Probable Date

The ricasso bears the well-defined four-cannonball arsenal emblem, representing a stack of four cannonballs viewed from above. Reference charts associate this emblem with Tokyo Arsenal before 1936 and with Kokura Arsenal from 1936 through 1945. The mark alone therefore cannot distinguish every Tokyo-made example from later Kokura production.

On this bayonet, the bright fullered blade, hooked quillon, contoured screw-fastened grips, rounded bird's-head pommel, and plain five-digit serial are most consistent with Tokyo Arsenal production at Koishikawa. The serial is not a year code, and surviving reference data do not provide a dependable year-by-year sequence for every Type 30 variation. The date is therefore pre-1936, with the exact year undetermined.

Serial Number and Other Markings

The pommel is faintly stamped 16043. Surface wear makes the number difficult to photograph, but examination under a jeweler's loupe confirmed the five characters. Japanese bayonet serial numbers were assigned independently from rifle serial numbers, so this number does not correspond to any particular rifle.

A small painted marking survives near the scabbard throat. Portions resemble numerals or abbreviated inventory characters, but the remaining paint is not complete enough for a reliable reading. Its exact significance is unknown and it is preserved as a possible rack, unit, or property marking.

Construction and Early-Pattern Features

The bayonet retains the characteristic early Type 30 hooked quillon, intended to protect the hand and potentially catch an opposing blade. The crossguard incorporates a full muzzle ring, while the pommel contains the T-shaped rifle mounting mortise and spring-loaded locking catch. The locking button remains operational.

Its long single-edged blade has fullers on both faces and a bright finish. The dark wooden grip scales are individually contoured and secured by two screws with escutcheons, a more refined arrangement than the riveted wraparound or slab grips adopted on many later wartime bayonets. The overall fit and finish are consistent with regular arsenal manufacture.

Steel Scabbard

The accompanying scabbard is the early tubular steel service pattern. It has a reinforced throat, rounded frog stud, dark aged finish, and small ball-shaped finial. These features are compatible with the hooked-quillon bayonet and contrast with the simplified fiber, wood, and bamboo scabbards associated with later wartime production.

The bayonet seats fully in the scabbard.

Rifle Compatibility

This bayonet has been physically test-fitted to a circa-1942 Japanese Type 99 Short Rifle manufactured at Kokura Arsenal. It slides fully onto the bayonet lug, the muzzle ring aligns correctly, and the pommel catch locks it in place.

The bayonet is probably older than that rifle, but the pairing is historically appropriate. Type 30 bayonets remained standard equipment for decades and were issued and reissued with successive Japanese rifle models. The common four-cannonball Tokyo/Kokura arsenal lineage also gives the two artifacts a strong collection connection without implying that they were originally issued together.

Reported Truk Atoll Bring-Back

The seller described the bayonet as having been brought home from Truk Atoll, now Chuuk, by an American serviceman during the Second World War. No veteran name, capture paper, period tag, or other supporting documentation accompanied the artifact. The Truk association is therefore recorded as seller-reported provenance rather than a documented chain of ownership.

The attribution is historically plausible. U.S. carrier forces struck the major Japanese base at Truk during Operation Hailstone on February 17-18, 1944. The base was subsequently bypassed and isolated, and Japanese forces at Truk formally surrendered aboard USS Portland on September 2, 1945. If the reported history is accurate, recovery during surrender, disarmament, or the immediate postwar period is more likely than acquisition during a ground battle.

Condition and Collector Notes

The bayonet is complete and mechanically functional. Its bright blade retains a strong profile and clearly defined fullers, with fine scratches, scattered dark spotting, and evidence of earlier cleaning or polishing. The point and cutting edge remain intact. The crossguard and pommel carry an even brown-gray patina with localized oxidation but no major deformation.

Both wooden grip scales remain solid and show the expected dents, scratches, and finish loss from age and handling. The grip fasteners are present, and the press-stud mechanism operates correctly. The steel scabbard has surface wear, scattered oxidation, and the surviving painted throat marking, while retaining its complete body, frog stud, throat assembly, and finial. Together they form an attractive and historically representative early-pattern Type 30 service set.

Dating and Authentication

The arsenal-stamped ricasso, regulation dimensions, bright fullered blade, hooked quillon, screw-fastened contoured grips, rounded pommel, working mounting catch, and early steel scabbard support authentication as an original Japanese military Type 30 service bayonet. These features favor production during the Tokyo/Koishikawa period, probably before 1936, while the precise year remains unknown.

Earlier manufacture is fully compatible with Second World War service. The Type 30 remained Japan's standard bayonet throughout the war, allowing prewar examples to serve alongside much later Type 99 rifles. Its complete early configuration, readable serial number, proper steel scabbard, confirmed rifle fit, and preserved Truk attribution give this example strong historical and collector interest.

Selected Research References

• World Bayonets: Bayonets of Japan - Type 30 dimensions, construction variants, rifle compatibility, and scabbard patterns.
• Markings on Japanese Arisaka Rifles and Bayonets - Arsenal emblems, serial-number context, and common Type 30 configurations.
• Australian War Memorial: Arisaka Type 30 Bayonet - Museum reference example of the standard Japanese service bayonet.
• Naval History and Heritage Command: Truk Raid, 1944 - Historical account of Operation Hailstone.
• Naval History and Heritage Command: Surrender at Truk Atoll - September 2, 1945 surrender ceremony aboard USS Portland.