English gold and enamel watch with chatelaine Circa 1785

Gold and enamel watch
–
A very fine and rare English gold, enamel watch with matching chatelaine, enamel key and enamel seal fitted in original Morocco fitted box., circa 1785. Gilt, full plate movement, bezel with decorative polychrome enamel, backplate with polychrome and translucent enamel. Fusee and chain, cylinder escapement, three-arm brass balance, pierced and chased single footed cock flush with the backplate, diamond endstone, silvered regulation dial,
White enamel dial with Arabic numerals, outer minutes. Gold arrow hands. Signed movement.
–
Diameter: 51 mm
–
Signed: Step. Twycrofs
–
Very thin hairline.