Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Lot 593:
1965, Flowers, imperforate proof of 1c multicolored, right margin horizontal pair, in addition right sheet margin single of 6c with strongly misplaced vertical perforation, full OG, NH, VF, proof is very rare, Est. $300-$400,Scott #169, 172 var
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