Bidspirit auction | Czechoslovakia - Semi – Postal

Czechoslovakia - Semi – Postal issues - 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