Swiss gold, enamel and diamond-set lady’s pendant watch Circa 1910

Gold lever pendant watch
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A fine and elegant Swiss, 18K gold, enamel and rose-cut diamond-set, lady’s keyless pendant watch, circa 1910. The bezel and band are decorated with translucent aquamarine guilloche enamel, the back cover with translucent aquamarine guilloche enamel over radial guilloche, applied with applied platinum rose-diamond-set flowers and white painted flowers, white enamel greek-key border. Hinged gold cuvette engraved R. Merk-Wirz, Zürich.
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Matte gilt dial with champlevé Breguet numerals, outer minute track, subsidiary seconds. Blued steel Breguet hands. First Grade Adjusted, matte gilt movement, 16 jewels, straight-line lever escapement, cut bimetallic compensation balance, blued steel flat balance spring, index regulator. Cuvette signed movement and case are numbered.
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Diameter: 26 mm
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Signed: Longines  Swiss
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The case is slightly chipped.