Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 3

RSFSR Issues 1918-23 - Postal History Items during the stamp shortage period

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Start price: $100

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1921, registered cover sent locally in Kiev, three-line violet marking ”Postage paid in cash due to lack of stamps” with handwritten 1,250rub and officially signed, no backstamp, VF, Est. $150-$200