Swiss quarter repeating verge watch with erotic automaton Circa 1820

Silver repeater with concealed erotic scene
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A fine and rare Swiss silver open faced quarter repeating verge pocket watch with concealed erotic automaton, circa 1820. Frosted gilt full-plate movement with cylindrical pillars, Ø 47 mm, fusee and chain, verge escapement, three-arm brass balance with flat balance spring, polished steel cock, index regulator, repeating on gongs activated by depressing the pendant. Gilt metal cuvette hinged to the movement ring with a central small concealed spring-loaded cover opening by sliding a pin to reveal a multicoloured engraved gold gentleman and lady in an amorous upright position, animated by the action of the repeating mechanism. White enamel dial with Arabic hours, an outer minute track, a winding aperture at 2 o’clock and blued steel Breguet hands. The case is engine-turned with cast flower and leaf borders, a reeded band. Case numbered.
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Diameter: 55 mm
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Signed: No name