Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2
Lot 1079:
Description
1876, 20k blue, a single printed on white wove paper, margin at right touched outer circle, repaired nick at top. large part of OG, VF and very rare, rank ”RRR”, only 7 stamps reported, C.v. $6,000, Est. $4,000-$5,000 , Schmidt #11
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