A small French Louis XVI ormolu mantel timepiece circa 1770

replaced 5.5-cm enamel dial with Roman numerals and engraved pierced gilt hands, pocket watch movement signed Guydamour A Paris No.450, ormolu case surrounded by a wreath and surmounted by an urn, supported by a fluted column, moulded base with protruding corners and applied mounts surmounted by attributes of the sciences, raised on turned feet