Swiss chronograph with calendar and moon phases Circa 1915

Gold hunting cased quarter repeating chronograph
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A Swiss heavy quarter repeating hunting cased pocket watch with full calendar, moon phase and chronograph, circa 1915.
The case of this watch is 14 karat rose gold with glazed movement. The white signed dial consists apertures for moon phases and lunar calendar and for day- and month designations, two subsidiary dials and gold hands. It has a 1/2 plate movement, 2 hammers / 2 gongs, Swiss Patent “334” and a screw compensation balance
Swiss patent no. 334 was one of Barbezat-Baillot’s most important inventions and included the use of centrifugal force for the repeater mechanism.
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Diameter: 57 mm
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Weight: 146 g
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Signed: Union Horlogère, Bienne Geneva
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Founded in 1883 under the initiative of the most renowned manufacturers and distributors of the time, UNION HORLOGÈRE was originally a joint Swiss collaboration, with the aim of making joint purchases and establishing a network of distributors around the world.
By 1890, the company established itself in the watchmaking city of Bienne and in 1917 was located Rue de l’Union.