Swiss gold pendant watch with matching chain Circa 1915

Gold, platinum, enamel and diamond-set lady’s watch
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A very fine and elegant Swiss, 18K gold, enamel, platinum and diamond-set lady’s keyless pendant watch with matching gold and enamel chain, circa 1915. Retailed by J. Chaumet Paris. The case is overlaid with rich blue enamel with white line borders and the back cover with applied platinum and rose-cut diamond-set decoration. Matte silver dial with Breguet numerals, outer minute track, and engine-turned centre. Blued steel Breguet hands. A rhodium-plated movement, Geneva striping decoration, 17 jewels, straight-line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, index regulator. Dial signed J. Chaumet.
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Diameter: 26 mm
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Signed: No Name (Retailed by J. Chaumet Paris)