Third Reich Hitler’s 55th Birthday MiNr. 887 This stamp was issued on 14 April 1944 to commemorate Hitler’s 55th birthday. Set Date(s) 14 April 1944 Watermark(s) None Hitler’s 55th Birthday MiNr. 887 This stamp was issued on 14 April 1944 to commemorate Hitler’s 55th birthday. Set Date(s) 14 April 1944 Watermark(s) None