"one of those fancy new Roth-Sauer automatic pistols"

Roth-Sauer 7.65 mm pistol
Public DomainRoth-Sauer 7.65 mm pistol
     George Roth owned ammunition factories in Vienna. He collaborated with Karel Krnka in 1898 on the design of this pistol. It was patented by Roth and Krnka in 1900. The pistol was manufactured by J.P. Sauer & Sohn in Suhl, Germany.