Swiss platinum and 18 carat gold lever dress watch Circa 1920

Platinum and gold open faced watch by Touchon & Co
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A thin Swiss platinum and 18 carat yellow gold open faced quality extra lever dress watch, circa 1920. Polished case, monogrammed RBM, inner lid with dedication engraving Robert B. Meyer 17 East 64 St. New York City from K.A.M. 1924. Silvered dial with applied gold Arabic hours, an outer dot minute track and gold spade hands. Bridge movement, lever escapement, gold screw compensation balance.
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Diameter: 41 mm
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Weight: 42 g
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Signed: Tiffany & Co by Touchon & Co Swiss
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Tiffany & Co, colloquially known as Tiffany’s, was founded in 1837 by the jeweller Charles Lewis Tiffany and became famous in the early 20th century under the artistic direction of his son Louis Comfort Tiffany. It is an American luxury jewellery and speciality design house headquartered on Fifth Avenue in Manhattan, New York. 
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Touchon & Co. A watch manufacturer that was first established in Sécheron, later in Petit-Saconnex (districts of Geneva) and subsequently at 1, Place de la Fusterie. The trademark was registered on February 2, 1907, under No. 21652. The manufacturer, which produced high-quality watches, merged with Agassiz Watch Co. S.A., to launch extra slim watches on the market of 16 1/2″‘- 17/12th, 15/12th, 10/12th and even 10″‘- 10/12th. This latter movement, fitted in its case, could be concealed into a 20-dollar coin and was awarded the Gold Medal at the Paris Exhibition in 1889 and, in 1910, received the highest distinction in Brussels. The company produced these watches for Tiffany. In 1921, Touchon entered into a partnership with Wittnauer, under the new company name of Wittnauer & Cie, for the production of watches and spare parts, and moved premises to 4, Rue du Mont-Blanc until 1924.