Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Lot 342:
1932-37, First Resources, Sealing Fleet, imperforate trial color proof of 25c in black, printed on thick paper without watermark, no gum as issued, NH, VF, Walsh NSSC 191g, C.v. US$920++, Scott #197
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