1 crown Masaryk with double hand stamp overprint "Karlovy Vary 1. X. 1938 plus swastika", first overprint resulted in colour error dark rose and was subsequently in the correct colour bright blue green overprinted, in conjunction with 50 Heller Benes with hand stamp overprint as well Czechoslovakia 40 Heller Levoca and German Reich 6 Pfg Nazi Party Congress 1937 on document with adapted date cancel's Karlovy Vary 4. X. 38 4 d, sound, unsigned, photo expertize Brunel VP (2023) "the condition is perfect. the stamp with double overprint in two colours is extremely rare. ", by Michel without valuation