Manufactured in Argentina, the Ballester-Molina was the successor to the Model 1927 Pistol, a licensed copy of the American Colt 1911. The "B" prefix of the serial number and the British proofs are associated with a series of pistols produced expressly for sale to the British government during the Second World War, and was used as sidearms by the British 8th Army, as well as a number reportedly shunted to the Special Operations Executive, which was in need of non-British ordnance to equip their agents. Fixed sights, with the three-line model and caliber markings on the left side of the slide, British "NP" nitro proof and tonnage markings on the chamber, and London "crown/GP" stamps on the slide and frame. Matching numbers are present on the barrel, slide and frame.

Made under license from Colt for sale to the Army. Fixed sights, with "D.G.F.M - (F.M.A.P.)" on the left side, the Argentine Army/caliber/model markings on the right, and matching numbers on the slide, barrel, frame and magazine. Fitted with a checkered trigger, wide hammer, arched mainspring housing and black grips.