History of Aviation, Rare Stamps and Postal History of the World, Part 3
Lot 1229:
1957, 40th Anniversary of the October Revolution, proof souvenir sheet of 40k x3, printed on thick paper without lilac color (silhouettes of Leningrad), enlarged size 149x106mm, no gum as produced, NH, VF and scarce, R. Menozzi certificate, a common CTO sheet is enclosed for comparison, Est. $1,500-$2,500, Sc. #1943a
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