Jewish co-worker inmate conterfeiter Saloman Sorowitsch?

Salomon Smolianoff, the counterfeiter on which the movie is based, was sent to the Mauthausen concentration camp in 1939, when he was caught for counterfeiting as the movie portrayed. Note that in the movie he shows his green triangle badge, for "professional criminal". That was the reason for his original internment, and as such he was an international wanted criminal even after the war. Though he would surely have been sent to the camps as a Jew given a short period of time, German Jews were not yet sent in large masses to concentration camps at this time (although they were heavily persecuted).