Swiss chronograph ankerchronometer with register Circa 1900

Gold full hunter chronograph by Vacheron & Constantin
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A very heavy Swiss 18 carat gold hunting cased ankerchronometer pocket watch with chronograph and register, circa 1900. Very fine ankerchronometer movement with chronograph, balanced lever, fine adjusting device. Cuvette inscribed Chronomètre Chronographe Compteur de Minutes. White enamel dial with black Arabic hours and red Arabic minutes, 30-minute counter, rose gold hands. Plain case, spring lid with monogram UG. Case numbered, dial signed, cuvette signed and numbered, movement signed.
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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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Vacheron & Constantin pocket watch chronometers with chronograph and minute counter are extremely rare.