American 18 carat gold split seconds chronograph Circa 1910

Gold watch with engraved family crest
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An American 18 carat yellow gold keyless pocket watch with split seconds chronograph, circa 1910. A split second chronograph push button at 11 o’clock, hinged gold cuvette, case back centered by an engraved family crest. White enamel dial with black Breguet numerals, outer 1/5th seconds track with five second red Arabic markers, sunk subsidiary seconds dial and blued steel spade hands. Nickel movement, bar caliber, 21 jewels, straight line calibrated lever escapement, cut bimetallic compensation balance with Breguet balance spring, swanneck micrometer regulator. Dial, case and movement signed.
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Diameter: 49 mm
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Signed: Tiffany & Co.  New York