English gold, enamel, diamond and pearl set pocket watch Circa 1790

Gold watch with matching detachable châtelaine
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An English 18 carat gold, enamel, diamond and pearl set pocket watch, circa 1790.
With a matching detachable 19 cm long gold, enamel and pearl chatelaine with key and seal. A solid case, hinged with a bezel of blue enamel and split pearls set within gold chatons, matching outer reverse to royal blue enamel centre with diamond set circular wreath, central oval with hairs glazed compartment with diamond border. White enamel dial, black Arabic numerals, outer minutes, winding aperture and rose cut diamond set hands. Full plate, gilt movement, engraved top plate, turned pillars, fusee barrel with verge escapement, pierced and engraved single footed cock with diamond end stone, steel three arm balance, flat hairspring, silver regulation dial. Movement numbered.
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Diameter: 47 mm
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Signed: John Wenham  Dereham