50 Heller to 2 coronas BIT 1937 with hand stamp overprint "we are free! plus swastika", on faultless letter pieces each with special cancel "Liberec 1 German Reichspost eighth of October 1938 Heil Hitler! ", edition 200 sets, expertized Dr. Hoerr, photo expertize Brunel VP (2024) "perfect", Michel 600.-