Vacheron Constantin. A fine and rare 18K gold openface split seconds chronograph keyless lever watch with Guillaume balance and Bulletin d'Observatoire Signed Vacheron & Constantin, Genève, Chronomètre, movement no. 408565, case no. 257375, manufactured in 1931 Cal. RA 17/19, with nickel-finished lever movement, 17 jewels, Guillaume balance, free sprung regulator, engraved gold cuvette, the white enamel dial with Arabic numerals, gilt moon-style hands, outer blue and red enamel Arabic tachymeter scales, two subsidiary dials indicating 30 minutes register and constant seconds, in circular plain case, split seconds chronograph mechanism operatured through a button in the band and through the crown, case, cuvette, dial and movement signed 51 mm. diam.
Vacheron Constantin. A fine and rare 18K gold openface split seconds chronograph keyless lever watch with Guillaume balance and Bulletin d'Observatoire Signed Vacheron & Constantin, Genève, Chronomètre, movement no. 408565, case no. 257375, manufactured in 1931 Cal. RA 17/19, with nickel-finished lever movement, 17 jewels, Guillaume balance, free sprung regulator, engraved gold cuvette, the white enamel dial with Arabic numerals, gilt moon-style hands, outer blue and red enamel Arabic tachymeter scales, two subsidiary dials indicating 30 minutes register and constant seconds, in circular plain case, split seconds chronograph mechanism operatured through a button in the band and through the crown, case, cuvette, dial and movement signed 51 mm. diam.
.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
