Mauser prototype Model in .45 ACP.
Extremely Rare Mauser Prototype .45 Caliber Self-Loading Pistol. The only known example manufactured by Waffenfabrik Mauser 1915. The pistol is marked: " WAFFENFABRIK MAUSER A.G. OBERNDORF a.N./ KONSTRUKTIONSDATUM 17:2, 1915" in two lines on the left side of the frame. The rear of the frame is serial numbered "2." Nickel- plated magazine numbered "3" at the rear near the base. Rust-blue finish with niter-blued trigger. Barrel polished bright. One-piece, wraparound European walnut grips with bordered checkered panels on both sides. Slide has integral front sight and ten deep grasping serrations at the rear. Mauser patent descriptions covered the design of the .45 caliber Mauser pistol and Mauser indicated in about 1912 they intended to produce a model in .45 ACP - and at least one prototype was built.

Formerly in the collection of Sidney Aberman of Pittsburg, Pennsylvania. The Aberman Collection, perhaps the finest and most comprehensive group of automatic pistols ever assembled, included a .45 caliber Luger, the .45 caliber Walther MP and the Roth .45 caliber.

To be sold at auction in December 2003 by Rock Island Auction.