Swiss gold minute repeating keyless pocket watch Circa 1910

Gold open faced dress watch
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A very fine and rare Swiss 18 Carat yellow gold open faced minute repeating keyless lever dress watch with extra adjustment, circa 1910. Polished knife edge case. Matte silver dial with painted Arabic numerals, outer minute track, subsidiary seconds at six o’clock and blued steel Breguet hands. Nickel silver movement, Geneva striping decoration, 32 jewels, straight line counterpoised lever escapement, cut bi metallic compensation balance, adjusted, blued steel flat balance spring, index regulator, repeating on gongs by an activating slide on the band.
Dial signed, case and movement numbered.
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Diameter: 48 mm
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Signed: Touchon & Co. Genève