Swiss 18K yellow gold chronometer pocket watch Circa 1910

Gold open faced chronometer lever watch
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A Swiss 18 carat yellow gold open faced chronometer pocket watch, the Chronomètre Royal, made by Vacheron Constantin SA in Geneva, circa 1910. This watch has a hand wound mechanical movement with a spiral balance, a lever escapement, and a micrometric adjustment. The plate is signed Chronomètre Royal Vacheron & Constantin Genève and numbered 356956. The white enamel dial shows Roman numerals for the hours, a minute track, a subsidiary seconds dial, and spade hands, signed Chronomètre Royal Vacheron & Constantin Genève. The round 18 carat yellow gold case has a hinged back with guilloché decoration and a blank pastille in the centre, numbered 220068. The gold cuvette is signed Vacheron & Constantin.
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Diameter: 57 mm
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Weight: 137 g
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Signed: Vacheron & Constantin Genève
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Building on its reputation as a watchmaker of complicated and precise timepieces, Vacheron Constantin launched a series of chronometer watches in 1907 called Chronomètre Royal. The name was registered as a trademark on May 28, 1907, and translated into English on May 8, 1908, as Royal Chronometer. The principle was simple: a precision instrument for everyday use with a highly legible dial. This technical watch featured a simple, unfinished gold movement, as shown in our example. The model remained in production until the 1930s and was adapted to a wristwatch in 1958.