1. North America flight 1936, USA post / post from Cuba, letter from GUANTANAMO Bav 6.5. With 2 x 25 C to Schladen, rare document from military base the American on Cuba, with airmail from havana to New York and with LZ 129 to Frankfurt, in the US Postal service course damaged and inside repaired with four seal stamps "Officially Sealed . ", flight stamp on face, arrival with Machines-SST Frankfurt 14.5, superb, signed Aisslinger (winner 409 C / M)