Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Danzig - Zeppelin Flights - 1931 (July 24-27), North Pole Flight postcard, franked by two stamps, including airplane 2½ g brown, tied with oval Danzig ds, Friedrichshafen ''24.7.31'' connection, red confirmation cachet and Ice Breaker ''Malygin'' drop of July 27, VF and scarce, Sieger #119, C.v. €900 w/o a premium for franking, Scott #C3