Swiss gold watch with tachometer scale and chronograph Circa 1942

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An extremely fine Swiss, 18K yellow gold keyless pocket watch with chronograph and 30-minute register, circa 1942.  sold on August 22, 1945. Accompanied by the Extract from the Archives. A polished case, buttons at 11 and 1 for the chronograph functions. Silver dial with applied yellow gold Arabic and baton numerals, inner track for minute and fifths of a second division, outer tachometer scale, subsidiary dial for the seconds and 30-minute register. Yellow gold baton hands. A rhodium-plated movement, gold wheel train, 23 jewels, eight adjustments, lever escapement, monometallic compensation balance with gold temperature screws, blued steel Breguet balance spring. Dial, case, and movement signed.
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Diameter: 46 mm
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Signed: Patek Philippe & Cie.  Genève
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The case is slightly worn.
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The present watch is accompanied by an Extract from the Archives confirming its sale on August 22, 1945. The watch shows very little polishing and the movement is very clean. The original dial shows minor imperfections, however, it exhibits a strong signature and details, offering an attractive, well-preserved example of this model.