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

RSFSR Issues 1918-23

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Start price: $150

Buyer's premium:

1922, black surcharge 100,000r on 250r violet, basic stamp is typo printing on ordinary paper, top left corner margin block of four, full OG, NH, VF, Est. $250-$300, Scott #210 var