Swiss gold and Plique à jour enamel brooch watch Circa 1890

Gold brooch watch in rococo Louis XV-style
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A very fine and rare Swiss, rococo Louis XV-style, 18K gold and Plique à jour enamel lady’s keyless pendant watch, circa 1890. With matching gold and plique à jour brooch.
A polished band, the bezel chased with asymmetric scrolls, the back chased with asymmetric foliate scrolls and flowers, the centre with a Plique à jour flower. Hinged gold cuvette. White enamel dial, radial Roman numerals, outer dot minute divisions and large radial Arabic five-minute numerals. Gilt Louis XV hands. A matte gilt movement, eight jewels, cylinder escapement, three-arm balance with blued steel flat balance spring, index regulator.
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Diameter: 24 mm
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Signed: No Name
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The case is slightly chipped.
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The use of Plique à jour enamel is very unusual in a watch. The technique gives the effect of stained glass when held against the light. This is achieved by cutting out the design in the gold, then the design is filled with enamel forming a window of suspended enamel. The technique is difficult and requires that the artisan be highly skilled.