Made in prototype form only. Few examples surviving. Known serial numbers no higher than mid teens. Most are large framed. Chambered for 8mm Bergmann-Schmeisser cartridge. At least one was made in 7.5mm Swiss revolver for Swiss army testing. A few very compact versions, with a unique folding trigger for 5mm Bergmann. Early Bergmann pistols had no extractor, counting on gas pressure to blow the fired (rimless-groove-less) cartridge from chamber. Too rare to price.