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

Soviet Union

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Start price: $100

Buyer's premium:

1957, Launching of the First Sputnik, 40k indigo on bluish paper and 40k bright blue, two complete sheets of 98 (14×7), folded once along vertical perforation, fresh, full OG, NH, VF, Est. $150-$200, Scott #1992-93