Airmail cover flown on the Graf Zeppelin LZ127 airship's Pan America flight from the USA in 1930. Sent to Seville, Spain with receiver reverse, and then forwarded back to the USA, where it received the New York ROUND TRIP Flight Zeppelin machine cancel reverse (though the round trip wasn't paid for -see note in Michel). Scarce variant in excellent condition. '17 CV EUR450
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