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

Worldwide Zeppelin Flights - Austria

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Start price: $75

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1929 (May 15), 1st America Flight (interrupted at Cuers) cover addressed to Cleveland, OH, franked by four air post values, including pair of Crane 3s red brown, blue confirmation cachet and red line interruption marking, delivered by another America Flight in August with appropriate NYC receiving ”Aug. 5.1929”, F/VF, Sieger #26, Est. $100-$150, Sc. #C26 x2, C29 x2