Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Poland - Zeppelin Flight - 1932 (April 17-20), 3rd South America Flight stationery postcard 15gr gray to Brazil, uprated by nine values (8 - on reverse), tied by Warsaw ''14.IV.32'' ds, red Berlin-Friedrichshafen connection and orange brown flight markings, Pernambuco arrival hs on reverse, VF, D. Leder certificate, Sieger #150, C.v. €900, Est. $500-$600, Scott #235, 258, 262