A gilt brass Congreve rolling ball clock
E. Dent & Co. Ltd., London, No. 221, 1970's
Mounted on a mahogany plinth with ball feet and velvet covered step, ball-footed tapering columns with turned finials, the single wire fusee movement with three silvered rings for minutes, hours and seconds over the knife-edge pivoted runway with single ball bearing, with brass bound glass shade. 32cm (12.5in) high.