6 penny and 12 penny (4) referendum on about 4 penny postage exceeding tariff rate Zeppelin postcard the Sudetenland travel of the LZ130 with before first days special cancel "Frankfurt (Main) flight- and Air ship harbor Rhine-Main 1.12.38" with arrival postmark from Liberec, top left small corner crease on the map, F.D.C. Documents as Zeppelin flight card are rare, photo expertize Hans Dieter Schlegel BPP, Michel 1.000.-