A tortoiseshell boulle mantel clock, French, circa 1875

7-inch twelve-piece enamel cartouche dial, square plated gong striking Vincenti movement, sunburst pendulum, the Louis XV-style waisted case veneered with brown tortoiseshell inlaid with brass, surmounted by the figure of Mercury, an eagle defeating a serpent on the lower door edge and with foliate mounts throughout