English gold enamel watch with a matching chatelaine Circa 1770

Gold polychrome enamel painted watch by William Addis
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A fine English gold and polychrome enamel painted consular cased verge watch with matching chatelaine, circa 1770. The watch has a gilded full plate movement with verge escapement, a decoratively pierced balance cock engraved with scrolling foliage, a diamond end-stone, a silver regulation plate, turned baluster pillars, and a gilt metal dust cap. The movement and dust cap are signed and numbered by Wm. Addis of London, with the serial number 2207. It also has a white enamel dial with Roman numerals, an outer Arabic minute ring, an aperture for the date at 4 o’clock, and filigree hands.
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The case is made of gold and features a back with a polychrome enamel painted scene depicting Vertumnus and Pomona within a landscape, with a pyramid in the distance. The bezels are set with enamel-painted vignettes of pastoral scenes, and the gold mounts have decorative engraving. The case bears the maker’s mark DA with a pellet between incuse, probably for Daniel Aveline.
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The chatelaine is made of gold and gilt metal, with four panels featuring polychrome enamel painted plaques depicting Achilles and the daughters of Lycomedes, each surrounded by gold mounted chased and engraved borders and with gilt metal backs. The uppermost panel includes a pendant hook and four pendant chains terminating in a key with a polychrome enamel painted mount, faceted crystal with a gold cross in the centre, egg-form snuff box, and the top of a vinaigrette.
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Diameter: circa 48 mm
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Length: 190 mm
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Signed: William Addis, London
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The enamel scenes on the plaques depict Achilles and the daughters of Lycomedes, possibly based on an engraving by Louis Surugue and the painting by Nicolas Vleughels.
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The dial has some light scratches. The enamel panels on the case seem to be in good overall condition, but there are some repairs in soft enamel around the bezel vignettes. The cover catch is slightly loose. The far-right pendant chain ends in what appears to be the top of a vinaigrette, with the base missing.