Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Russia And Soviet Union - Zeppelin Flights - 1930 (September 10-11), Moscow Return Flight stationery card and cover addressed to Germany or USA, uprated/franked by Zeppelin 40k blue (postcard) plus one stamp or 80k carmine (cover) plus two stamps, both Zeppelin values with perf 12½, appropriate Moscow special ds and Friedrichshafen ''11.9.30'' arrival markings, Sieger #85Aa, Ba, Est. $200-$250, Scott #C12-13