Bidspirit auction | Worldwide Air Post Stamps and
Worldwide Air Post Stamps and Postal History - Iceland - Zeppelin Flight - 1931 (June 30-July 3), Iceland Return Flight picture postcard, franked altogether by eight stamps (three on picture side), including complete Zeppelin set of three on address part, tied by Reykjavik ''30.VI.31'' date stamps, green confirmation marking and Friedrichshafen ''3.7.31''receiver on the back, VF and rare complete set franking, Sieger #114, C.v. €1,200, Est. $600-$800, Scott #C9-11