Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 1

United States - Modern Errors

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Start price: $150

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1992, Christmas issue, 29c x4 multicolored, left sheet margin imperforated proof se-tenant booklet pane with normal stamp positions, plate No.A111111 at selvage, full OG, NH, VF, C.v. $600, Est. $250-$300 , Sc. #2718aP