Swiss 18 carat gold minute repeating lever watch Circa 1910

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A fine 18k yellow gold open faced minute repeating watch, circa 1910, retailed by Bohm bristol co., San Francisco. Jewelled nickel lever movement, precision regulation, minute repeating on steel gongs, white enamel dial, painted black Arabic numerals, outer minute track with red numerals, subsidiary seconds at 6, feuille hands, the case with repeating slide to the band, gold cuvette, engraved initials to the case back, case and movement signed.
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Diameter: 47 mm
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Signed: Audemars Piguet