A Vienna regulator timepiece, plain ebonised case, one-month duration with white glazed enamel glazed fixed vertical calendar scale, the day of the month indicated by a pointer fixed to the descending weight, two-level white glazed enamel dial with arrow indicating anti-clockwise direction of winding, white glazed enamel beat plate, deadbeat escapement with maintaining power and wooden pendulum rod. Bayonet fittings secure the movement to the pillars of a bracket plate screwed onto the case and from which the pendulum is suspended. Height 1020. c.1860.