Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2
Lot 935:
Description
1878, 3k black and green, irregular block of 21, representing all 9 existing types, a few folds mostly between stamps, full OG, at least 12 values are NH, F/VF, C.v. $420++, Est. $300-$350 , Schmidt #7
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