Swiss gold grande sonnerie striking clockwatch Circa 1900

Gold hunting cased grande sonnerie lever clockwatch
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A large Swiss 14-carat gold hunting cased grande sonnerie striking lever clockwatch, circa 1900. Keyless gilt bar movement, the single going barrel driving both the strike and going trains, plain cock with polished steel regulator, compensation balance with blue steel overcoil hairspring, club foot lever escapement, striking hours and quarters in passing or at will by depressing the small button in the band on two polished steel gongs. White enamel dial with Arabic numerals, subsidiary seconds, and pierced gilt hands. Substantial plain case, gold button in the band to repeat the hours and quarters, strike silent lever under the front cover. Gold cuvette engraved with details of the movement.
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Diameter: 57 mm
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Signed: No name
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An impressive watch in excellent condition. The unusual clockwatch mechanism was patented by Henri-Onésime Stauffer of Neuchatel in February 1897. A single barrel is used to power both the strike and going trains so the watch will run for over two days if set to silent and the repeat is used sparingly. If the strike is enabled it will sound the hours and the quarters every quarter of an hour and still run for more than 24 hours. The patent is also found in small carriage clocks from the early 20th Century for which it was eminently suitable.