Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Romania - Zeppelin Flights - 1932 (May 2-5), 4th South America Flight cover to Brazil, franked by eight stamps, including complete air post issue of 1931, tied by Bucharest oval date stamps, Friedrichshafen connection and vermilion confirmation markings, Pernambuco arrival hs on reverse, F/VF, Sieger #157, Est. $300-$350, Scott #C17-21