Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 3

Soviet Union

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Start price: $2,000

Buyer's premium:

1924-25, definitive issue, worker 20k light green, typo printing, imperforated bottom sheet margin single on grayish paper, nice condition, full OG, previously hinged, VF, Soviet Philatelic guarantee hs, Raritan Stamps opinion, Est. $3,500-$4,000, Sc. # 288