English gilt-metal pair case quarter striking clock watch Circa 1780

Two train quarter striking clock watch, made for the Turkish market
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An English fine and large gilt metal and painted horn pair case two train quarter striking clock watch, made for the Turkish market, circa 1780. Gilt full plate, finely pierced and engraved balance cock, finely engraved foot, two train chain fusée with verge escapement, turned pillars, two steel hammers striking the quarters, half hours and hours on a bell positioned in the case.
White enamel dial, black Turkish numerals, gilt beetle and poker hands.
Pierced and profusely engraved inner case with floral designs, strike/silent level in the bezel, outer painted horn scene depicting a galleon under full sail departing the harbour, pierced gilt and decorative embellishments, heavy squared hinge.
Movement and dial signed George Prior, London, dust cap signed  Daniel De St. Leu.
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Diameter: 60 mm
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Signed: George Prior, London
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A Swiss emigré, Daniel De St Leu is recorded as being active in London from 1753 until 1797. During this period he specialized in clocks and watches decorated for the Turkish market. In 1765 he was appointed Watchmaker to Queen Charlotte, wife of King George III.