Swiss gold repeating chronometer with chronograph Circa 1910

Gold minute repeating split seconds lever chronograph by C.L. Weidemann
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A very fine, rare Swiss 18 carat gold open faced minute repeating keyless lever pocket chronometer with split seconds chronograph, circa 1910. Premier prix au concours de chronomètre. Frosted gilt movement, 31 jewels, counterpoised straight-line lever escapement, cut bimetallic compensation balance with gold and platinum temperature adjustment screws, special alloy Breguet balance spring, index regulator, visible chronograph work, repeating on gongs activated by a slide on the band. Gold hinged cuvette engraved with the technical details. White enamel dial with Roman numerals, outer minute track, outermost seconds and 1/5th seconds divisions with five second numerals, subsidiary seconds dial and original blued steel spade hands. Dial and cuvette signed.
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Diameter: 50 mm
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Signed: C.L. Weidemann Genève
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This watch has a high grade finish and an escapement, balance and balance spring intended for high precision adjustment. This is quite an unusual feature in a watch with chronograph and repeating mechanisms because these functions inherently affect the timekeeping of the watch adversely and therefore such watches are not usually made as high precision timekeepers.
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The firm of C.L. Weidemann registered its name in 1883 with a trade mark for horological products of its own make.