Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 1
Lot 259:
Description
1973, Progress in Electronics, 8c multicolored, left margin single with tan (background) and lilac colors omitted, full OG, NH, VF, Errors Cat. stated that only 50 stamps exist, C.v. $600, Est. $250-$300, Sc. # 1501b
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