Swiss gold open faced cylinder pendant watch Circa 1890

Gold watch with an enamel portrait of a lady 
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A fine Swiss 18K gold and painted-on enamel keyless pendant watch, circa 1890. A polished band, engraved bezel, the back painted on enamel with a portrait of a lady in an engraved scroll border and a hinged gold cuvette. White enamel dial, Arabic numerals, outer gold dot minute divisions and gilt Louis XV hands. A matte gilt movement, eight jewels, cylinder escapement, three-arm balance with blued steel flat balance spring, and an index regulator.
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Diameter: 23 mm
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Signed: No Name
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Some dents on the case.