A late 19th Century Black Slate and Variegated Marble Mantel Clock, the plinth-shaped case with s

A late 19th Century Black Slate and Variegated Marble Mantel Clock, the plinth-shaped case with serpentine front, and silver presentation plaque dated March 1873, to a cast brass bezel with heavy bevelled glass, enclosing a 3 ½" Roman enamel chapter ring with sunk centre and visible brocot escapement, and blued steel moon hands, to a circular brass movement with anchor escapement and strike on a bell (bell lacking), height 11"