Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Lot 343:
Description
1868, imperforate trial color proof of 3c in brown, printed on wove paper, no gum as issued, VF, not priced in Unitrade, BNA NSSC #17o, C.v. US$900, Est.$300-$400 , Scott #25
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