Revolver-knife of pocket, with folding notch "SB", six shots, gauge 5,5 mm with annular percussion. Barrel with sides struck "Eprouvé", striped. Cylinder plain, punched of Liege. Iron ramrod on the right side and hammer without crest. Iron frame with two black horn plates. Blade with back and counter-edge struck "Bte SGBG" and signed to the heel "SB". Folding trigger. Length open : 23,3 cm - Length closed : 13,2 cm A.B.E. (cracks in the plates). About 1860 / 1880.