Japanese bayonets were marked on the ricasso with a symbol, or combination of symbols, in order to indicate the arsenal, or contractor who made them. These markings are shown below:

 

Tokyo Arsenal

Tokyo Arsenal

1870 - 1929

Kokura Arsenal

Kokura Arsenal

1929 - 1945

Kokura Arsenal

Hikari Seiki Seisakusho

(Prism Instrument Factory)

Matsushita Kinzoku

Matsushita Kinzoku

(Matsushita Metals)

Matsushita Kinzoku

Matsushita Kinzoku

(Matsushita Metals)

Nagoya Arsenal

Nagoya Arsenal

Unknown

Unknown

Riken Kouzai

Riken Kouzai

(Riken Steel)

Kanaashiyo Sakugan

Kanaashiyo Sakugan

(Kanaashiyo Rock-Drilling)

Kanaashiyo Sakugan

Kanaashiyo Sakugan

(Kanaashiyo Rock-Drilling)

Toyoda Jidou Shokki

Toyoda Jidou Shokki

(Toyoda Automatic Loomworks)

Toyoda Jidou Shokki

Toyoda Jidou Shokki

(Toyoda Automatic Loomworks)

Mukden Arsenal

Mukden Arsenal

Manchuria

Heijo Ordnance Factory/Jinsen Arsenal

Heijo Ordnance Factory/Jinsen Arsenal

Inchon, Korea

Unknown

Unknown

Tientsin Arsenal

Tientsin Arsenal

China