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

Soviet Union

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Start price: $500

Buyer's premium:

1983, Rostov-on-Don, 4k multicolored, top sheet margin horizontal imperforate pair, printer’s cross on the selvage, full OG, NH, VF, Est. $1,000-$1,200, Scott #5140 imp