Swiss cylinder watch made for the Islamic market Circa 1830

Rose gold and enamel quarter repeater by Denis Blondel
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A very fine and rare Swiss 18 carat rose gold and enamel open faced quarter repeating pocket watch with gold Breguet-type chain and gold ratchet key decorated to match the watch made for the Islamic market, circa 1830. Matte gilt movement, 8 jewels, ruby cylinder escapement, three-arm gilt balance, flat balance spring, index regulator with bimetallic temperature compensation curb, repeating with two polished steel hammers on two gongs activated by a pull-and-twist piston in the pendant. White enamel dial with Islamic numerals, outer minute track and original gold Breguet hands. Lobed case with twelve segments decorated with painted-on enamel flowers and trophies on a translucent opalescent ground, the segments between painted in imitation of shagreen, the bezel decorated to match. Cuvette signed.
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Diameter: 55 mm
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Signed: Denis Blondel à Genève
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Denis Blondel is recorded working at 27, Rue de la Cité in 1835 as a maker of complicated enamel watches for the oriental market.