Early English technically interesting gold alarm watch Circa 1817

Gold cylinder watch with alarm
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An early, technically interesting pocket watch with alarm and original leather case made by Charles Edward Viner in London, England, circa 1817. The open faced case of this watch, which was crafted from 18 carat gold, has London Hallmarks for 1817. The white enamel dial has Roman hour numerals, an outer minute track, a subsidiary seconds dial at 6 o’clock, a central alarm hand, which is set through the crown, and solid gold hands. The numbered movement has a very rare cylinder escapement, alarm on a gong, a steel balance and diamond endstone.
Case and movement have matching numbers, dial and movement are signed.
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Diameter: 53 mm
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Weight: 142 g
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Signed: Viner New Bond Str.t. Royal Exchange London
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Viner
Charles Edward Viner (1788-1875) served his apprenticeship with Thomas Savage in London. In 1813, he became a member of the Clockmakers’ Company. Viner was granted a patent for the position of the alarm hand through the coaxial, rotating crown in the upper part of the pendant. He became known for his pocket watches of the finest quality, which he often fitted with the pump winding mechanism he invented. Signed alarm watches based on his patent are exceptionally rare.