Japanese Bayonet Manufacturer's Marks
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
1870 - 1929
Kokura Arsenal
1929 - 1945
Hikari Seiki Seisakusho
(Prism Instrument Factory)
Matsushita Kinzoku
(Matsushita Metals)
Matsushita Kinzoku
(Matsushita Metals)
Nagoya Arsenal
Unknown
Riken Kouzai
(Riken Steel)
Kanaashiyo Sakugan
(Kanaashiyo Rock-Drilling)
Kanaashiyo Sakugan
(Kanaashiyo Rock-Drilling)
Toyoda Jidou Shokki
(Toyoda Automatic Loomworks)
Toyoda Jidou Shokki
(Toyoda Automatic Loomworks)
Mukden Arsenal
Manchuria
Heijo Ordnance Factory/Jinsen Arsenal
Inchon, Korea
Unknown
Tientsin Arsenal
China