Third Reich Hitler’s 49th Birthday MiNr. 664 This stamp was issued on 13 April 1938 to commemorate Hitler’s 49th birthday. Set Date(s) 13 April 1938 Watermark(s) None Album Page(s) Hitler’s 49th Birthday MiNr. 664 This stamp was issued on 13 April 1938 to commemorate Hitler’s 49th birthday. Set Date(s) 13 April 1938 Watermark(s) None Album Page(s)