50 H. To 20 Kc. Airmail stamps with hand stamp overprint "we are free! Plus swastika", complete set in each case as margin- and corner margin pieces on blank envelopes uniform used "Liberec German Reichspost 8. X. 1938 Heil Hitler! ", very fine, issued only 20 sets, of it few corner margin copies, all expertized Richter and Mahr BPP as well photo certificates Brunel VP (2020) "the condition is perfect. ", Michel 14.400.- - unique ensemble