English triple cased repeater for the Turkish market Circa 1818

Gold, enamel and diamond set quarter repeater by Edward Prior
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A fine and rare English 18 carat gold, enamel and diamond set open faced triple cased quarter repeating keywound watch made for the Turkish Market, circa 1818. Full plate engraved gilt finished movement, finely pierced and engraved balance cock and foot, diamond end stone, quarter repeating on a bell. White enamel dial with Turkish numerals. Case with a polychrome enamel floral bouquet on a translucent pink enameled engine tuned ground to the reverse, red, white, blue and green champlevé enamel border, pierced band and bezel, the second case with polychrome enamel landscape and harbor scene with outer red, white, blue and green champlevé enamel scroll and foliate decorated border, band and bezel, the scalloped outer case with pink enamel background with champlevé red and white enamel and gilt florets, quarter repeating activated through the diamond set pendant. Dial and movement signed, movement numbered, both outer cases with London date letter for 1818.
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Diameter: 50 mm
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Signed: Edward Prior London