A French month-going mantel regulator circa 1820, in later mahogany four-glass case, the circular

A French month-going mantel regulator circa 1820, in later mahogany four-glass case, the circular movement with external pinwheel escapement on the backplate, outside countwheel strike and substantial grid-iron compensated pendulum, the convex Roman numeral enamel dial signed 'Gravant A Paris', with centre seconds within fine engine-turned gilt bezel, the plinth form case with ebonised mouldings and fluted uprights, on stepped plinth base, 51cm high.