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

Imperial Russia - Postal Forgeries to defraud Postal Authorities

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Start price: $1,000

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1918-21(c), 10k dark blue, litho printing on paper without varnish lines, postally used imperforated block of 15 (3×5), Yalta ”14.11.22” postal cancellation, VF and the largest known multiple of this forgery, Est. $1,600-$2,000, Sc. # 124