If Adolf Hitler is alive and well and living in South America somewhere, he would be 118 today.
The site philatelist points out that a set of a block of four dark green 6-pfennig stamps was issued -"Who Would Save His People Must Think Heroically". Wer ein Volk retten will kann nur heroisch denken (Which is Ko želi spasiti jedan narod, može samo herojski razmišljati in Hungarian)
334 stamps were issued during the period of the Third Reich often bearing Hitler's head, his head never appeared on any coinage of the Third Reich. There are two versions of the block set, with and without the perforations Both blocks were issued 4/5/1937 for Hitler's 48th birthday on 4/20/1937.... 70 years to the day.
The Journal of Decorative and Propaganda Arts, Vol. 10, Autumn, 1988 (Autumn, 1988), pp. 62-79 doi:10.2307/1504019
An interesting footnote is that in 1944 the American propaganda sections of U. S. Office of Strategic Services re-issued a mocking set showing a deaths skull instead of Hilters head with the date by the Reichsmark of 1944 - they are supposed to be blood red the head stands in a field of cemetery crosses. They also issued millions of not dissimiliar stamps, sometimes using them to post to the addresses of dead soldiers.
Curiously there has been a small and modestly profitable post war industry in forging these proaganda stamps.(A set is for sale at US$25 here)