Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Lot 48:
1930, black or red Airplane and text “Ecuador” overprints on Centenary of Guayaquil Liberation 1c-10c, set of singles and set in blocks of 4 (6c -vertical pair), full original dry gum, NH, F/VF, Sanabria #519-28, Est. $250- $300
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