50 Heller Masaryk misery with hand stamp overprint "we are free! Plus swastika" from the left lower corner of the sheet with plate number 6 A, on faultless blanko-envelope with special cancel "Liberec 1 German Reichspost eighth of October 1938 Heil Hitler! ", edition 150 piece, of it few with plate number, photo expertize Brunel VP (2020) : "the condition is perfect. As corner margin piece with plate number lies they for the first time before. ", Michel 300.- plus