Fine Swiss gunmetal erotic automaton pocket watch Circa 1910

Gold hunting cased cylinder watch 
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A fine Swiss gunmetal keyless pocket watch with concealed erotic automaton scene activated during winding, circa 1910. Hinged gun metal cuvette covering the chased gilt brass automaton scene, activated whilst being wound, depicting a couple in a boudoir whilst another looks on.

White enamel dial with radial Roman numerals, outer minute track, subsidiary seconds. Gilt brass Louis XV hands. A brass, three-quarter plate movement, cylinder escapement, plain brass three-arm balance, blued steel flat balance spring, index regulator.
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Diameter: 52 mm
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Signed: No Name