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

Worldwide Zeppelin Flights - Germany

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Start price: $100

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1931 (April 10-11), Egypt Flight postcard, franked by Castle 1m green, tied by Friedrichshafen ”9.4.31” date stamp, red confirmation cachet, Cairo ”11.AP.31” drop and Jerusalem ”13.AP.31” arrival marking, VF, Sieger #104 var, Est. $150-$200, Sc. #337