Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2

Soviet Union 1923-91

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Start price: $300

Buyer's premium:

1954, 75th Birthday of Joseph Stalin, imperforate plate proof of 1r in dark grayish blue, horizontal pair printed on wove paper without watermark, size 21.5×40.5 mm, no gum as produced, NH, VF and very rare, Raritan Stamps guarantee, Est. $600-$700, Scott #1744