Swiss silver grande and petite sonnerie repeating watch Circa 1820

Silver open faced quarter repeater
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A Swiss silver open faced quarter repeating grande and petite sonnerie cylinder pocket watch, circa 1820. Complex cylinder movement, two barrels for the gear train and striking train, repeating the hours and quarter hours, pendant with a release button, grande sonnerie self striking hours and quarters, petite sonnerie self striking hours, muting possibility. White enamel dial with Arabic hours and outer minute divisions and steel Breguet hands. Case engine turned.
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Diameter: 58 mm
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Weight: 143 g
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Signed: No Name