History of Aviation, Rare Stamps and Postal History of the World, Part 1

United States

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Start price: $500

Buyer's premium:

1919, Washington, 1c gray green, horizontal pair imperforated vertically with straight edge at right as always exists, fresh color, full OG, NH, fine and rare, C.v. $1,400, Est. $750-$1,000 , Sc. #536a