Apropos the Annexation, here is a philatelic cover referring to the plebiscite on April 10,1938 when Austrians voted whether they wanted to join the Third Reich or not.
The postmark says
One people,one country,one leader.The blue imprint says
On April 10 give the leader your yes.The stamp was issued on April 8 and shows symbolically a German and Austrian walking together in unity.
There are two versions of the stamp, the one printed by the State Printer in Berlin is dark green, swastika watermark, perf 14, size 23x28mm.
The other printed by the Austrian State Printer, Vienna is deep green, unwmk, perf 12¾, size 21.5x26mm

