50 Heller and 1 Kc. \"Purkyne\" with hand stamp overprint \"we are free! Plus swastika\", in each case with special cancel \"Liberec 1 German Reichspost 8 oct 1938 Heil Hitler! \" on blank cover, issued only 50 sets! Expertized Mahr BPP, Reibg HP and expertise Robert Brunel VP (2023) : \"the condition is perfect. \", Michel 3.000.-