Swiss double-sided decorative calendar watch Circa 1898

Steel open faced gentleman’s pocket watch retailed by John Hall & Co.
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A Swiss decorative double-sided gentleman’s pocket watch with calendar and moon phase, circa 1898.
Bridge movement, frosted, gilt, with a club-tooth lever escapement and a screw compensation balance. Steel case, gun-metal finished and glazed on both sides. Two dials: enamel front dial with Roman radial hours, extra seconds, large moon phase in the centre, and blued spade hands; silvered back dial with indications of the date and weekdays, rectangular aperture for the month, and blued spade hand.
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Diameter: 54 mm
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Weight: 104 g
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Signed: Swiss made, John Hall & Co, Manchester
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John Hall & Co, English jewellers, silversmiths and watchmakers.
John Hall & Co. was founded as Hatfield & Hall in 1830 and was located at 68 King Street, Manchester. In 1860 the company was transformed when John Hall & Co. by partners John Hall Sr, John Clapham, Willian Henry Hall and John Hall Jr . The company was known as a retailer of fine quality watches. The watch shown is a pocket watch supplied by Baume & Co, 21 Hatton Garden, London, which advertised such watches in the “Horological Journal” from 1902.