Swiss gold, diamond and Belle Epoque enamel pendant watch Circa 1910

Gold watch with a matching long chain
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A very elegant Swiss, 18K gold, enamel and rose-cut diamond-set lady’s keyless pendant watch, circa 1910. Belle Epoque enamel watch with an 18K gold and enamel long chain. A polished band, the bezel with white enamel line decoration, the back cover overlaid with translucent royal blue guilloche enamel with a white line border, applied letter A set with rose-cut diamonds.  Matte silver dial with Breguet numerals, outer minute track. Blued steel spade hands. A matte gilt movement, bar calibre, eight jewels, cylinder escapement, three-arm brass balance, blued steel flat balance spring, and an index regulator.
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Diameter: 26 mm
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Signed: No Name
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The dial is slightly oxidized.