Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Gibraltar - Zeppelin Flight - 1933 (September 2-5), 6th South America Flight registered cover to Brazil, franked by two King George V stamps, tied by oval ''14.AU.1933'' ds, red Berlin-Friedrichshafen connection and blue flight markings, Pernambuco ''6.IX.33'' arrival hs is alongside, VF, Sieger #229, C.v. €300, Est. $250-$300, Scott #84, 99