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

RSFSR Issues 1918-23

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Start price: $75

Buyer's premium:

1922, black diagonal surcharge 100,000r on 250r violet, two stamps in violet or pale violet shade, both are typo printing on ordinary paper, full OG, LH, VF, a common stamp of litho printing is included, Scott #210 var