A late 19th century French champlevé enamel four-glass mantel clock

A late 19th century French champlevé enamel four-glass mantel clock, the eight day movement striking on a gong and stamped 'MEDAILLE D'ARGENT' and numbered '1659411', the circular brass dial with Arabic numerals and decorated with enamel, the serpentine front case with a green onyx top and base and enamel borders and with bevelled glass panels, 31.6cm high, 21cm wide.