Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 1

Worldwide Zeppelin Flights - Danzig

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Start price: $150

Buyer's premium:

1930 (July 9-10), Spitsbergen Flight pre-printed cover from Danzig to Hammerfest (Norway), franked by three Air Post values, green Flight cachet, arrival ds on reverse, VF, Sieger #73, €450, Est. $250-$300 , Sc. #C26, C28, C30