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

Worldwide Air Post Stamps and Postal History - Costa Rica

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Start price: $100

Buyer's premium:

1940, Pan-American Aviation Day, black surcharge 15c on Map of Cocos Island stamp of 25c orange instead of 50c yellow, full OG, NH, VF and scarce, expertized by A. Roig and others, Est. $150-$200 , Sc. #C55 var