Russia 2509-2510 imperf CTO

$ 5.10

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Russia 2509-2510 imperf, canceled to order, $10.00. Michel 2521B-2522B. Man in space, 1961. Vostok 2, Gherman S. Titov. Blocks of 10, upper left corner margin - buy 10 sets; Blocks of 12, bottom-right corner margin - buy 12 sets.