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

United States

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Start price: $120

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1943, Flag of Austria, 5c blue violet, red and black, right sheet margin horizontal strip of three, middle stamp with double impression of ”Austria”, full OG, NH, VF, PSE certificate for block of six, this strip being at bottom, C.v. $400++, Est. $200-$250, Sc. #919, a