Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 1
Lot 371:
1974, Energy Conservation, 10c multicolored, top left corner margin plate No.35107 single with green and red colors omitted, full OG, NH, VF, C.v. $275, Est. $100-$150 , Sc. #1547b
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