Swiss quarter repeating verge for Turkish market Circa 1800

A Swiss 18 carat gold quarter repeater in pair cases made for the Turkish market, circa 1800 (and later). Gilt verge movement, balance bridge pierced and engraved with scrolls, regulator calibrated with Turkish numerals. White enamel dial with Turkish numerals. Inner gold case pierced and engraved with running foliate scrolls. The outer case later re-enameled with opaque turquoise enamel with white enamel scalloped border and enamel rosettes in tones of red, green and gold centered by a polychrome enamel scene of a Military trophy. The case stamped with pseudo English marks, the dial and movement signed.
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