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

Imperial Russia

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Start price: $150

Buyer's premium:

1883, 70k brown and blue, printed on horizontally laid paper, left margin block of four, lower left stamp with joined ”7” and ”0” in the bottom right value tablet (Mandrovski Monograph No.36Kb), full OG, NH, VF, C.v. $540 as four common singles, Est. $300-$350, Scott #38, var