This is a very rare example of the large frame Dreyse semi-automatic prototype pistol chambered in 9 mm Parabellum. The company that originally manufactured this was the Rheinische Metallwaaren & Maschinenfabrik company later shortened to just Rheinmetall in 1936 after the rise of the Nazi in the 1930s. The company is best known for its first small pocket pistol, the Model 1907, chambered in 7.65 mm. This large frame 9 mm example is actually an enlarged version of the first model pistol; however, it was termed the "3rd" model and manufactured circa 1910-1915. Very few were actually manufactured with all their production shifting to more pressing wartime work during WWI. Some what short lived, this specific pistol has the slotted back strap intended for a wooden shoulder stock of some type makes this a very rare and desirable early automatic pistol. The left side of the slide and frame area are marked with a single "Crown/N" commercial proof with no other proofs or serial number on the pistol. It is fitted with a set of checkered, black hard rubber grips with the intertwined company initials of "RMF". It comes with one original magazine that is stamped with "206 II" on the bottom of the floorplate. This unique pistol also comes with a copy of an article from the Arms Gazette in Dec 1973 identifying this pistol as being the only know example cut for a shoulder stock.

Very fine with 90% plus of the original blue finish overall showing minor edge and high spot wear only. The grips are in very good condition showing wear and light handling marks on the sides of the grips. The pistol functions, but is incomplete in that the striker/firing pin assembly is missing. This is a fine example of a scarce early Dreyse large frame prototype chambered in 9 mm Luger with the very rare slotted back strap.