Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2

Ukraine - Trident Overprints - Kyiv

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Start price: $150

Buyer's premium:

1918, violet overprint (Arnold type 1) on 3k red, three- side margin imperforate block of ten (5×2), full OG, NH or hinged (two stamps), VF, multiples of this type of overprints are very scarce, this block is the largest known positional piece, ex-Dr. Seichter and Dr. Zelonka, Est. $300-$400, Bulat #115