Cylinder in a gold and enamel open-faced case Circa 1860

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A cylinder in a gold and enamel open faced case, circa 1860. Keywind gilt bar movement with suspended going barrel. Plain cock with polished steel regulator. Plain three arm gilt balance with blue steel spiral hairspring. Polished steel cylinder and steel escape wheel. White enamel dial with Roman numerals, blue steel hands. Slim 18 carat open face case with chased bezels. Engraved back decorated with fine polychrome scene framed by light and dark blue champlevé enamel. Wound and set through the signed and numbered gold cuvette.

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Diameter: 35 mm
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Signed: Robert A Geneve