1937 National Stamp Exhibition
Third Reich Private Postal Stationery
This series was issued to commemorate the 1937 Die Deutsche Briefmarke Nationale Ausstellung (German National Stamp Exhibition) in Berlin.
The left sides of the cards feature stamps from German postal history. The sponsor is listed as Infla-Berlin, and the patron as Reichspostminister Karl Wilhelm Ohnesorge.
A commemorative cancel was available at the Exhibition.