Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 1
Lot 355:
1972, Wildlife Conservation, 8c multicolored, complete transition sheet of eight se-tenant blocks of four, black engraved color (picture, description and denomination) strongly shifted to the bottom left, resulting in stamps at top four horizontal rows have doubled or omitted ”United States” variety, full OG, NH, VF, an attractive and rare item, Est. $1,000-$1,200, Sc. #1467a var
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