Swiss nickel cylinder with automated erotic scene Circa 1890

Nickle cylinder with automated erotic scene
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A late Swiss nickel open-faced cylinder pocket watch containing a rare automated erotic scene, circa 1890. Keyless gilt bar movement with going barrel, plain cock with polished steel regulator, plain gilt balance with spiral hairspring, polished steel cylinder, and steel escape wheel. White enamel dial with Roman and Arabic numerals, subsidiary seconds, and blue steel hands. Plain case. The cuvette has a false cover which opens to reveal an erotic boudoir scene on an engraved plate, the parcel-gilt figures engaged in an amorous encounter briefly spring to life when the cover is opened, the mechanism driving the figures is wound again when the cover is closed, ready to spring into action the next time it is opened.
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Diameter: 56 mm
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Signed: No name
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A rare form of this type of erotic automaton. The more usual type is actuated by the repeating train of the movement. In this watch the automaton is self-contained, its train being used only for the figures.