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

Czechoslovakia - Semi – Postal issues

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Start price: $50

Buyer's premium:

OVERPRINTS ON AUSTRIAN DEFINITIVE STAMPS: 1918, misplaced black diagonal overprint ”Posta Ceskoslovenska” on Coat of Arms stamps of 3h violet and 5h yellow green, Emperor Karl I stamp of 15h dull red, blocks of four, full OG, NH (block of 5h and bottom stamps of two other blocks) or LH, VF, expertized by J. Leseticky, Est. $100-$120, Scott #B1-2, B7 var