English pair cased Grande Sonnerie verge watch Circa 1790

Fire gilt open faced pocket watch by Daniel de St. Leu 
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An important, fine pair cased verge pocket watch with “Grande Sonnerie”  for the Ottoman market, circa 1790.
The case is fire gilt, green and brown tortoiseshell, ornamented band, large lateral hinge, the sides richly florally engraved and pierced, signed movement protection cap. Signed enamel dial with radial Ottoman numerals and gold scotties hands. Full plate movement, keywind, applied florally engraved and pierced ornaments, frosted, gilt, chain/fusee, 2 hammers/1 bell, solid circular pillars, signed, blued screws, verge escapement, three-arm brass balance, florally engraved, pierced balance cock, silver regulator disc.
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Diameter: 64 mm
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Weight: 218 g
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Signed: Daniel de St. Leu  London
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Daniel de St. Leu originally came from Geneva and worked from 1753 to 1797; he created some of the most beautiful and intricate watches of the eighteenth century. In 1765 he was appointed watchmaker to Queen Charlotte, wife of King George III – the fact that all of de St. Leu’s watches after this year are either signed ‘Sevt. to her Majesty’, or ‘Watch Maker to her Majesty’ is proof that he held this title for the rest of his life.
De St. Leu was specialized in the production of watches for the wealthy Ottoman market, where the clientele wanted their watches to be pieces of jewellery, often in lavish gold cases with elaborate decoration and set with precious stones. In the 18th century, English watches were very much in demand on the Ottoman market and exported in great numbers from England. R. Rolt states in ‘A New Dictionary of Trade and Commerce’, 1756, that “Great quantities of watches are exported to Asia, particularly to Turkey; where they serve more for ornaments like pictures in rooms, than for use in pockets.” Daniel de St. Leu created movements of superior quality and put them in extravagant cases – the perfect timepieces for the Ottoman market.