Bidspirit auction | Czechoslovakia - Semi – Postal

Czechoslovakia - Semi – Postal issues - 1919, strongly misplaced black diagonal overprint ''Posta Ceskoslovenska. 1919'' on definitive stamp of 3f red lilac, bottom sheet margin block of eight (4x2), full OG, NH or hinged (2), VF, expertized by Dr. Gilbert, Est. $150-$200, Scott #B74 var