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

RSFSR Issues 1918-23

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Start price: $400

Buyer's premium:

1918, Sword Breaking Chain, 35k ultra, horizontal imperforated pair, nice margins all around, full OG, LH, VF, C.v. $1,600, Est. $700-$800, Scott #149a