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

Soviet Union

The auction will start in __ days and __ hours

Start price: $2,500

Buyer's premium:

1979, Flag and Soviet Emblem, 4k multicolored, top right corner sheet margin horizontal imperforate pair, full OG, NH, VF, the rarest and most expensive imperf error of the period, suggested retail $16,800, Scott #4795 imp