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

Worldwide Zeppelin Flights - Vatican City

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Start price: $300

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1933 (May 29-30), Italy Flight postcard to Friedrichshafen, franked by two values, cancelled ”28.5.33”, uprated by Italian Zeppelin stamp of 3L, which tied by circular Rome ”29.5.33” ds on front, Rome machine marking with the same date is on reverse, blue flight cachet, green Friedrichshafen ”30.5.33” special Zeppelin receiver, mostly VF and scarce both types of Rome postmarks on one item (not priced in the Cat.), Sieger #208 Va/Vh, Est. $500-$600, Sc. #10, 14