50 h. To 2 Kc. Childrenãs help 1936 with hand stamp overprint "we are free! Plusplus swastika", used on blanko-envelope with special cancel "Liberec 1 / German REICHSPOST / 8. Oct 1938", so far are only a few sets known, therefore extremely rare, photo expertize Brunel BPP (2008) : "cover and stamps wise here and there spots on, apart from that is the condition perfect. ", Michel 12.000.-