Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 1
Lot 406:
1982, America’s Libraries, 20c red and black, top sheet margin (USPS) horizontal imperforated strip of three, full OG, NH, VF and very rare, C.v. $500 for a pair, Est. $500-$600 , Sc. #2015d
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