Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Netherlands - Zeppelin Flights - 1932 (July 2), England Flight postcard, and 1936 (June 19-21), Airship Hindenburg 3rd NAF cover, franked by two or three stamps, appropriate connection markings and confirmation cachet, each one with arrival markings, mostly VF, Sieger #168, 417, C.v. €285, Est. $150-$180