7mm Nambu. 3.25" barrel. SN: 1834. Blued metal finish with polished bolt mounting straw colored small parts and mounting boxed checkered wood grip panels. Short-recoil operated striker action autoloading pistol fed by detachable single stack magazines mounting fixed rear notch and dovetail mounted front blade sights. Upper frame displays the stacked cannonball markings of the {Koshikawa Arsenal} with right frame showing the standard Japanese Kanji type markings. Comes with one nickel plated magazine with aluminum floor plate struck with a matching serial number on the rear face. Serial numbers match. Firing pin non numbered.

Designed as a compact alternative to the 1902 Type A "Grandpa" Nambu pistol, the "Baby" Nambu pistol uses a miniaturized version of the Grandpa's operating system and construction. Chambered in the proprietary 7mm cartridge, this pistol offered its users a somewhat weaker cartridge than .32 ACP in a complex yet refined package. Unsurprisingly, it cost significantly more than competing simple-blowback operated pistols of the day, resulting in poor sales and limited manufacture. James D. Brown, author of the "Collector's Guide to Imperial Japanese Handguns 1893-1945" estimates that production was no more than 6,500 total between 1909, when full production began, and 1929, when it ceased.