Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 1
Wednesday, June 1, 2022 at 3:00 PM UTC
Lot 58:
1921 (April 10), cover from Experimental Unsuccessful Flight San Jose – Managua, franked by Mauro Fernandez 5c orange and semi-official air post stamp ”Costa Rica – Nicaragua” of 1col green and yellow, minor cover folds, still F/VF, Sanabria #501, Est. $250-$300, Sc. #72
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