Louis Audemars Brassus: A fine and rare early 19th century gold musical and quarter-hour striking and repeating open-face clockwatch in engine turned case, the white enamel dial with Roman numerals and gold moon hands, the three-train frosted gilt movement with uncut bimetallic balance, bimetallic temperature compensation in the style of Breguet, the polished steel striking and repeating work visible on the back plate, with separate strike/silent levers for the hours and quarters, the repeat operated by a trip button in the pendant striking on two gongs, the music playing on the hour or at will by operating the slide in the band, signed on the cuvette