History of Aviation, Rare Stamps and Postal History of the World, Part 1
Lot 362:
Description
1910, John Guy issue, King Edward VII, imperforated trial color proof of 12c in light green, left sheet margin horizontal imperforated pair printed on stamp paper, full OG, NH, VF, NSSC #88c, C.v. US$600++, Est. $200-$300 , Sc. #96
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