A French Empire gilt and patinated bronze mantel clock

A French Empire gilt and patinated bronze mantel clock, the eight day brass drum movement with an outside countwheel and striking on a bell, with an enamel annular dial with Roman and Arabic numerals, the centre with a visible movement, the open case with an urn surmount above scrolling leaves and a pierced gallery supported by Egyptian style sphinx caryatids, 40.9cm high.