Gold astronomical perpetual calendar watch from the 19th century

Gold unsigned watch with complications
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A fine gold open faced monogrammed astronomical pocket watch with a perpetual calendar, moon phases, days, and months, dating from the 19th century. This watch features a verge escapement. It has a white enamel dial with Roman numerals for the hours, a railway minute track, an openwork dial at 12 for the moon phases, a window at 6 o’clock for the days, and a perpetual calendar in the centre. There are also two small off centre dials: at 8 o’clock for the seconds and at 4 o’clock for the months. The case is made of yellow gold and is engraved with a monogram.
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Diameter: 52 mm.
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Weight: 129.1 g
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Signed: No name