Swiss 18K gold minute repeating keyless dress watch Circa 1906

Gold open faced lever pocket watch
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A very fine and rare Swiss, minute repeating, 18K yellow gold, slim, keyless dress watch, circa 1906. A polished case, back cover with engraved monogram. Hinged gold cuvette with dedication inscription. White enamel dial, Breguet numerals, outer minute track, subsidiary seconds. Gold spade hands. A frosted gilt movement, 29 jewels, straight-line lever escapement, cut-bimetallic compensation balance, Breguet balance spring, index regulator, repeating on gongs activated by a slide on the band. Dial, case and movement signed.
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Diameter: 48 mm
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Signed: Vacheron & Constantin  Genève