Rare Swiss gold minute repeating keyless pocket watch Circa 1910

Gold watch made for Diener Mexico
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A rare Swiss 18K yellow gold trip minute repeating, two-train keyless pocket watch, circa 1910. Accompanied by the copy of the Patek Philippe registers confirming the sale to its retailer H. Diener. A lepine case, button at two for the trip-repeat and a disguised hinged gold cuvette. White enamel dial, radial Arabic numerals, outer minute track with red five min Arabic indexes, subsidiary seconds and blued steel pear hands. Rhodium plated movement, Geneva striping decoration, tandem winding, 24 jewels, counterpoised and calibrated straight-line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, swan neck regulator, repeating the hours and quarter and minutes with two hammers on two gongs activated by depressing the button on the band. Dial, case, cuvette and movement signed.
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Diameter: 50 mm
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Thickness: 14 mm
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Signed: Patek, Philippe & Cie.  Genève