American gold watch with split-seconds chronograph Circa 1910

Gold open faced lever watch
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A very fine,18K yellow gold American keyless watch with split-seconds chronograph and register, circa 1910. A solid, polished, concealed hinged gold cuvette. Double sunk, white enamel dial with painted Arabic numerals, outer minute and chronograph divisions, subsidiary seconds, and minute register dials. Gold Louis XVI hands.

A nickel movement, 21 jewels, straight-line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, swan-neck micrometre regulator, visible chronograph works, split-seconds mechanism under the dial. Dial, case and movement signed.
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Diameter: 48 mm
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Signed: J. E. Caldwell & Co. Philadelphia