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

Worldwide Air Post Stamps and Postal History - Romania

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Start price: $75

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1929, two Pioneer Flight Covers Bucharest – Nuremberg (August 28) and Bucharest – Prague (December 3), franked by air post stamps with horizontal watermark, appropriate markings and arrival ds, mostly VF, Est. $100-$150 , Sc. #C4-6