Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Germany - Zeppelin Flights - 1929 (May 16-17, August 1-5), 1st America Flight two postcards from interrupted and realized flights, each one franked by Zeppelin stamp of 2m ultra, both with blue confirmation cachet, first one in addition with red line message of flight discontinuity, both with appropriate NYC arrival of August 5, mounted on pages from a Collection, VF, Sieger #26A, 27A, C.v. €380 with premium for franking, Scott #C36