Extra flat Swiss gold open faced lever dress watch Circa 1909

Gold keyless lever watch by Tiffany & Co
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A fine, very thin Swiss 18 carat gold open faced keyless lever dress watch, circa 1909. Rhodium plated movement, Geneva striping decoration, 17 jewels, straight-line lever escapement, cut bimetallic compensation balance adjusted, blued steel flat balance spring, index regulator. Gold hinged cuvette with engraved dedication. Frosted champagne coloured dial with champlevé dauphine numerals, outer minute track and original blued steel Breguet hands. Solid, polished case, the back centred by a lozenge shaped engraved monogram. Dial signed, case and movement numbered.
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Diameter: 46 mm
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Signed: Tiffany & Co