Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Poland - Zeppelin Flights - 1932 (April 18-21), 3rd South America Flight postcard to Brazil, franked by six values, tied by Warsaw ''12.IV.32'' ds, red Berlin-Friedrichshafen connection and orange brown flight markings, Pernambuco arrival hs on reverse, F/VF, Sieger #150, C.v. €900, Est. $500-$600, Scott #235, 258, 262