Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1

Worldwide Air Post Stamps and Postal History - Russia and Soviet Union

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1922, strongly shifted to the bottom red Airplane overprint on 45r green and black, left margin single, full OG (partially missing on margin away from the stamp), NH, VF, a common stamp is added for comparison,Scott #C1 var