Swiss gold split-seconds chronograph pocket watch Circa 1905

Gold lever watch in wooden fitted box
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A very fine and rare Swiss, 18K yellow gold keyless pocket watch with split-seconds chronograph and register, circa 1905. Accompanied by the original Patek Philippe wooden fitted box, original Certificat d’Origine, spare mainspring and the Extract from the Archives. Split Seconds Chronograph – 1st Quality by Patek, Philippe & Cie, Genève, made in 1905, sold on August 30, 1911.
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A solid, polished case, rectangular pusher on the band at 11 for the split-seconds function and bolt for locking the chronograph, the back cover with a small engraved monogram. Hinged gold cuvette with engraved dedication. White enamel dial with painted Breguet numerals, outer minute and 1/5 seconds divisions with red Arabic 5-minute/ seconds numerals, subsidiary seconds, 30-minute register. Yellow gold Louis XV hands. A rhodium-plated movement, Geneva striping decoration, 29 jewels, counterpoised straight-line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, swan-neck micrometre regulator. Dial, case, cuvette and movement signed.
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Diameter: 45 mm
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Signed: Patek Philippe & Cie  Genève
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The present watch is described on the original Certificate d’Origine as being 1st Quality. The monogram is also mentioned in the Certificate and Extract and is repeated on a plaque on the lid of the box. It is very rare for Patek Philippe split-seconds chronographs to retain the original Certificate and box.