On Wednesday I got not only two postcards but also a cover from Germany.
50 years Stiftung Deutsche Sporthilfe (from set of three) (issued 11-05-2017)
with First Day Special Postmark
The Stiftung Deutsche Sporthilfe was founded in May 1967. The charity's purpose is the support and sponsorship for sportspersons in return for their participation in international contests. The patron is the President of Germany. Since 1968 special stamps are issued in support of the charity.