A late 19th Century black slate variegated marble and gilt metal mounted Mantel Clock, the archit

A late 19th Century black slate variegated marble and gilt metal mounted Mantel Clock, the architectural case with freestanding columns flanking a cast brass bezel and raised on a plinth base to a Roman enamel chapter ring with outside minute track to a visible brocot escapement to a spring driven movement with anchor escapement, height 15 ½”