2 + Pfg till 10 Mark official stamps with overprint "C. I. S", mint never hinged, signed Dr. Hochstädter BPP, property sign and differently as well new photo expertize Gruber BPP (2016) : "the stamps are mint never hinged with original gum. The Michel-no. D2, D9 and D10 have the rough perforation, the Michel-no. D4, D5 and D7 - D11 have color traces on the gum side. The paper unevennessess are manufactured. The stamps are genuine and otherwise in perfect quality. ", Michel 4. 500. - a scarce issue!