Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 1
Lot 126:
1890, Webster, imperforated plate proof of 10c in green, horizontal pair printed on stamp paper without watermark, large part of OG, VLH, ”HHH” hs on reverse, C.v. $325, Est. $150-$200, Scott #226 P5
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