Swiss 18K gold thin gentleman’s pocket watch Circa 1910

Open faced pocket watch by Breguet
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A Swiss very fine, thin gentleman’s pocket watch, circa 1910.
18 carat gold polished and monogrammed case with a numbered and signed gold dome. Silver dial with engine turned centre, Arabic Breguet numerals, auxiliary seconds and blued Breguet hands. Extraordinary bridge movement design, frosted, gilt, with special patented Sandoz-Reymond’s lever escapement, gold screw compensation balance and a lever with jewelled pallets.
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Diameter: 47 mm
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Weight: 54 g
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Signed: Breguet
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The unusual movement of this watch must have been ordered to the specifications of Breguet from his supplier Paul Sandoz whose trademark (Sandoz Watch Co), registered on Avril 26, 1906, is punched on the front plate under the dial.

In addition, Sandoz, who after marrying combined his last name with this of his wife, and became Sandoz-Reymond, implemented in this watch rarely seen his own form of lever escapement which was patented on March 27, 1905.