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

Worldwide Zeppelin Flights - Switzerland

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Start price: $100

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1931 (June 6), Magdeburg Return Flight postcard from Romanshorn to Budapest, franked by two air post values, Magdeburg violet connection marking, red Flight cachet, Friedrichshafen ”7.6.31” arrival ds, mostly VF, Sieger #109 var, Est. $150-$200 , Sc. #C10-11