Swiss gold chronometer watch with chronograph Circa 1900

Hunting cased pocket watch by Vacheron & Constantin 
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A heavy Swiss pocket watch chronometer with chronograph and register, circa 1900.
Very solid and high-grade 18-carat gold, à goutte case with monogram UG on spring lid; dome signed, inscribed CHRONOMETRE CHRONOGRAPHE COMPTEUR DE MINUTES. Very rare and fine Ankerchronometer movement with chronograph, balanced lever and fine adjusting device. Signed enamel dial with red minutes on the outer track, sunk subsidiary dial for the 30-min counter, sunk subsidiary dial for the constant seconds, centre seconds chronograph, and pink gold hands.
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Diameter: 54 mm
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Weight: 145 g
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Signed: Vacheron & Constantin Genève
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These Vacheron & Constantin pocket watch chronometers with chronograph and minute counter are extremely rare and are rarely offered in an auction.