French 20K varicoloured gold and enamel watch Circa 1775

Gold and enamel Louis XV watch
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A fine French 20K varicoloured gold and enamel open faced verge pocket watch, circa 1775. A Louis XV case, the back painted with a young lady being serenaded by musicians and dancers in a landscape, the scene in camaïeu and en grisaille enamel, chased varicoloured border with pastoral trophies and flowers in relief, the bezel decorated with flowers in relief.

White enamel dial, radial Roman hours, outer minute track with five minute Arabic numerals, winding aperture at 4 o’clock and gold Louis XV hands. A hinged gilt-brass full plate movement with pentagonal baluster pillars, fusee and chain, verge escapement, micrometric potence adjustment, plain steel three arm balance, flat balance spring, continental cock, silver regulation disc.
Movement signed.
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Diameter: 46 mm
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Signed: Romilly à Paris
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Camaïeu is a technique that employs two or three tints of a single colour, other than grey, to create a monochromatic image without regard to local or realistic colour.
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A grisaille (en grisaille), or grey painting, is a painting in which one does not apply natural colours but restricts oneself to depicting things in all possible shades of the same colour, usually grey or brown.