Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - United States - ZEPPELIN FLIGHTS: 1930 (May 26-June 6), 1st Europe - Pan America Round Flight stationery postcard 1 c green from NYC to Friedrichshafen, uprated by Zeppelin stamp of 65c green, red German and violet American confirmation markings, Friedrichshafen ''6.6.30'' arrival ds, VF, Sieger #64F, Est. $100-$150, Sc. # C13