Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 1
Lot 64:
1929, two Pioneer Flight covers, first one on line Quito- Ibarra, franked by complete set of ten with Airplane overprints on Official stamps, the other one – Guayaquil-Valparaiso, franked by four values, appropriate markings, mainly VF, Est. $150-$200
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