Baby Nambu Type B
The Nambu pistols were used by the Japanese forces. Several models were designed and designated letter or number codes.
The type A had failing which lead to the type B. Both the pistol itself, and the round it fired, are smaller than the other Nambu pistols, leading to the name "Baby" Nambu.
The gun was designed by Major Kijiro Nambu.
Type B Nambu were produced at the Tokyo Artillery Arsenal. The first 450 models have the bottom part of the magazine made of wood, and only one diameter firing pin, but later Type Bs have the magazine made from aluminium, and incorporate a multiple diameter firing pin.
The Type B Nambu was never adopted officially by any Japanese armed forces. Imperial Japanese Army officers paid for pistols with their own salaries, but the Type B Nambu was unable to achieve market success as it was twice the price of a comparable imported pistol.
After the 1923 Great Kantō earthquake, Koishikawa arsenal stopped producing new parts for Type B Nambu, but continued to assemble ones with existing parts until 1929 . These were stamped with a different arsenal mark TG&E
Production was limited 6500
The Seriel number 3035 suggests early production. Sn is also inscribed on the grips
The 7×20mm Nambu is a rimless, bottleneck handgun cartridge designed in Japan for use in the Type B or "Baby" model Nambu pistol. The cartridge similar to the 8x22 nambu round. It was only designed for use in the baby Nambu pistol. Produced 1903 – 1945 The cartridge is considered obsolete