15-hour weight driven movement with countwheel Dutch quarter striking on two bells, alarm, rosewood case.
velvet covered dial with applied engraved silver chapter ring with Roman numerals signed Cornelis van Rossem op de Koog, brass hands with alarm disc, cherub spandrels and a garland below, weight drived 15-hour brass posted movement with verge escapement and knife-edge suspended horse rider pendulum, countwheel Dutch quarter striking on two bells, alarm on the larger bell, rosewood case with rwisted columns and side doors surmounted by the usual cast brass frets and double bell with atlas figure, shaped backboard with well figured veneer.