40 Heller postage due stamp with hand stamp overprint "Karlovy Vary 1. X. 1938 plus swastika", cancelled by first day postmark Karlovy Vary 1. X. 38 on faultless letter piece, edition 205 examples, expertized Osper, photo expertize Brunel VP (2024) "perfect. with postmark from first day is the stamp very rare. ", Michel 500.-