Swiss minute repeating chronograph with register Circa 1910

Gold open faced repeating chronograph by Longines
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A Swiss yellow gold open faced minute repeating chronograph watch with a 30 minute register, circa 1910. The watch features a manual winding movement with a lever escapement. It has a white enamel dial with Arabic numerals for the radial hours, an outer track for minutes and seconds marked with Arabic numerals every five minutes, a subsidiary seconds dial at six o’clock, a 30 minute register at twelve o’clock, and blued steel hands. It has an 18k gold case with an engraved cuvette, 5 Grand Prix Paris (2x), Anvers, Milan and Bruxelles, and a hinged back. The case, dial, and movement are all signed.
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Diameter: 53 mm
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Signed: Longines
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The movement is functioning correctly, with the chronograph operating and the repeating mechanism working in phase. The case is in fair condition and shows visible wear. The enamel dial has fine hairline cracks around the 11 o’clock and extends from the 3 o’clock position toward the centre. The dial is still reasonably attractive, though it has minor surface pits and scratches.