On Monday I got two postcards from Austria.
One of them shows Caravaggio's David with the Head of Goliath. David with the Head of Goliath was painted by Caravaggio in 1606/7. Today it can be seen in the Kunsthistorisches Museum in Vienna.
With a great matching stamp:
David with the Head of Goliath (issued 09-03-2019)
with First Day Special Postmark
Thank You very much Anita!