Elegant platinum and diamond set dress watch Circa 1920

Platinum key less lever dress watch
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An elegant platinum and diamond set key less dress pocket watch, circa 1920. Accompanied by a Vacheron Constantin box. A brushed case with a diamond set band and bow, inclined bezel, case back engraved with stylized initials AF within an offset lozenge. Matte silver dial with applied white gold Breguet numerals, outer dot minute divisions, subsidiary seconds and white gold trefoil hands. A rhodium plated movement, 18 jewels, straight line lever escapement, cut bi metallic compensation balance adjusted to eight positions, flat balance spring, index regulator.
Dial and movement signed.
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Diameter: 44 mm
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Signed: Vacheron & Constantin  Genève
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Jean-Marc Vacheron was born in 1731 and died in 1805. He founded a watch workshop in the Geneva district of Saint Gervais in 1755. In 1785 his son Abraham took over the then-still-small company. Their watches were favoured by the nobility, clergy and wealthy merchants. Sales deteriorated dramatically during the French Revolution and Abraham found himself confronted with numerous problems. He married and attached to his name, according to tradition, his wife’s surname. Thus the name of the workshop changed to Vacheron-Girod. At the beginning of the 19th Century, Abraham’s son Jacques Barthélemy Vacheron took over management of the company, which changed the name to Vacheron-Chossat. On numerous business trips to Italy, France and Germany, Jacques Barthélemy found new customers for their sophisticated products, including pocket watches with very flat movements for the time, hunting-cased watches and minute repeaters, built into expensive and elegant cases. In 1819, Vacheron brought in the son of a cloth merchant, François Constantin, as a partner to support the distribution of watches and the company became known as Vacheron & Constantin. Constantin had gained his first experience in the watch industry as a salesman for Jean-François Bautte and his exceptional abilities soon overcame the company’s previous financial difficulties. Sales figures rose significantly and Vacheron & Constantin began selling in New York by Jean Magnin and in New Orleans by Brey by 1830. In 1970 the ‘&’ was taken from the name, henceforth the company was called Vacheron Constantin. It is the oldest continually active watch manufacturer in the world. The brand logo is the Maltese cross. Today, Vacheron Constantin is part of the Richemont group.