Fine diamond-set for Turkish market French pocket watch Circa 1770

Gold enamel pocket watch made for Turkish market dial
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Fine gold, enamel and diamond-set pocket watch made for the Turkish market, made by L’Epine à Paris, circa 1770.
Two-body, Louis XV style, engraved gold bezel case set with rose-cut diamonds in silver, engraved back with central translucent blue enamel panel within a rose-cut diamond-set frame, the centre mounted with 7 large diamonds in a star design set in silver and a diamond-set thumb-piece.
White enamel dial with radial Islamic numerals, outer minute track with Islamic five-minute numerals and a winding aperture at 2 o’clock. Gilt hands.
Matte gilt movement with a full plate, fusee and chain, verge escapement with micrometric potence adjustment, three-arm brass balance, flat balance spring, pierced and engraved continental cock with steel endplate and a rack and pinion regulator with silvered dial. Dial and movement signed.
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Diameter: 39 mm
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Signed: L’Epine