Third Reich Grand Prize of Vienna MiNr. 900 MiNr. 901 In August 1944, the Third Reich issued these stamps to commemorate the 1944 Race for the Grand Prize of Vienna in Freudenau. Set Date(s) August 1944 Watermark(s) None Album Page(s) Grand Prize of Vienna MiNr. 900 MiNr. 901 In August 1944, the Third Reich issued these stamps to commemorate the 1944 Race for the Grand Prize of Vienna in Freudenau. Set Date(s) August 1944 Watermark(s) None Album Page(s)