Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 3
Lot 1373:
SMALL COLLECTION: 1918, violet overprints on 62 mainly mint (2 – used) perforated or imperforate stamps, including singles, pairs, strips of three or four and block of three with label, most valuable items are No.257-58, 275b, 280 and some more, nice and fresh quality unit, full OG, NH or LH/hinged, F/VF, many stamps are expertized, C.v. is over $1,000, Bulat #257/91
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