50 Heller exhibition Kaschau in the block of six in terms of two vertical gutter pairs with overprint "we are free! plus swastika", used "Liberec 1 German Reichspost eighth of October 1938 Heil Hitler! ", sound, unsigned, photo expertize Brunel VP (2019) "the condition is perfect. there in Liberec according to Dr. Hoerr only 400 examples of this stamp overprinted were, is the unit with gutter rare. ", Michel 600.-