These are authentic WW2 Nazi Germany postage stamps. This horizontal strip of four 1937 "Dienstmarke" (Official) 6 Pfennig dark green postage stamps were not standard postage stamps available to the general public. They were official service stamps reserved strictly for internal government correspondence and communications between Nazi Party (NSDAP) officials.
Description:
The dark green stamps feature a central swastika enclosed within an oak leaf wreath. The lower portion features the text "Dienstmarke Deutsches Reich" (Official Stamp of the German Empire) written in the old Gothic Fraktur text. The denomination "6" is printed in the top left and top right corners.
History"
The initial version with this design was issued in 1934 featuring a swastika watermark. A second run with identical visuals but slight color variations and no watermark was printed between 1942 and 1944.