Swiss gold repeating split seconds chronograph Circa 1907

Minute repeating split seconds chronograph lever by Patek Philippe
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A fine and rare Swiss 18 carat gold open faced minute repeating split seconds chronograph keyless lever watch, circa 1907. Nickel finished lever movement, 35 jewels, repeating on two hammers onto two gongs. Gold cuvette with engraved inscription Phillips E. Welton, From Father and Mother March 28-1923. White enamel dial with Breguet numerals, outer red Arabic five minute divisions and subsidiary seconds. Plain case, split seconds chronograph mechanism operated through a button in the band and through the crown, crown locking lever in the band. Case, cuvette, dial and movement signed, case and movement numbered.
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Diameter: 50 mm
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Signed: Patek, Philippe & Cie Geneva, Switzerland