An exhibition-standard 19th-Century gilt-metal and steel [?]tonsil knife,

细节
An exhibition-standard 19th-Century gilt-metal and steel [?]tonsil knife,
signed ROBERT ET COLLIN, the curved blade perpendicular to the shaft, with articulated clamp to back of blade, operated by gilt collar to shaft, with blued-steel adjustable bar and ivory handle -- 7in. (17.5cm.) long

See Colour Plate 4