Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Malta - Zeppelin Flight - 1933 (July 1-4), 3rd SAF registered cover from Valetta to Chile, franked by two values, including Statue of Neptune 3s blue and black, tied by G.P.O. Malta ''26.6.33'' ds, Rome transit on reverse, Friedrichshafen ''1.7.33''connection and blue flight cachet, Valparaiso arrival marking on the back, mostly VF and rare, Sieger #219Aa, C.v. €600++, Est. $300-$350, Scott #172, 181