A WWII Nazi German Third Reich enameled tin plate, a street sign with a Reichsadler, Nazi eagle holding a swastika insignia, and inscription NSKK Arzt, Doctor of the NSKK. NSKK stands for Nationalsozialistisches Kraftfahrkorps, the National Socialist Motor Corps, a Nazi Party organization active from 1931 to 1945 that served as a training organization instructing members in the operation and maintenance of high performance motorcycles and automobiles. Second World War Historical Collectables And Memorabilia, Street Signs And Miscellanea.