This is a very scarce and desirable "Baby Nambu" pistol, manufactured at the Tokyo Artillery Arsenal, in Koishikawa Tokyo. Only approximately 6,000 total produced. Never officially adopted by the military they were recognized as an "Authorized" firearm intended for private purchase by high ranking officers in either the Army or Navy. The chamber bears the four intertwined cannon balls of the Tokyo Arsenal and the right side of the receiver is marked with Japanese characters that identify the model above the serial number "1251". The magazine has a nickel-plated body and aluminum base with a non matching serial number. The grips are completely checkered. The "Baby" Nambu is perhaps the most scarce and desirable Japanese semi-automatic pistol. Condition: Bright bore, 80% of finish remains with some light pitting throughout The checkering on the grips is crisp. S/N 1251. Slide and frame serial numbers match.