A Congreve-Style Brass Rolling Ball Clock triple dial for hours minutes and seconds above a tilting platform all raised on turned columns the whole mounted within brass and glazed case ebonized base b
A Congreve-Style Brass Rolling Ball Clock triple dial for hours minutes and seconds above a tilting platform all raised on turned columns the whole mounted within brass and glazed case ebonized base brass spherical feet height 17 in. width 14 in. depth 12 1/2 in.