Swiss 18K gold minute repeating keyless pocket watch Circa 1915

Gold astronomical pocket watch
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A Swiss 18 carat gold astronomical hunting cased repeating keyless lever pocket watch, made by Louis Audemars, Le Brassus, circa 1915. Minute repeating watch with perpetual calendar, moon calendar, and phases of the moon. A plain case, white enamel dial with Roman numerals, outer minute track, four subsidiary dials and blued steel hands. Rhodium plated movement, Geneva striping decoration, 29 jewels, straight line calibrated lever escapement, cut bimetallic compensation balance with Breguet balance spring, rack and pinion micrometric regulator, lever escapement, repeating on gongs through activating the slide in the band. Dial, case and movement are signed.
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Diameter: 57 mm
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Signed: Audemars Freres  Swiss
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Watchmaker to his Majesty the Emperor of Russia by the ancient House of Audemars, founded in 1811. The title refers to the fact that the company was the successor of Louis Audemars, perhaps the best maker of complicated watches in the second and third quarters of the 19th century.