Excellent Swiss gold five minute repeating pocket watch Circa 1887

Gold watch retailed by Tiffany & Co.
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An excellent Swiss 18 carat yellow gold five minute repeating keyless pocket watch, circa 1887. Retailed and cased by Tiffany & Co. and sold as a movement only on May 31, 1889. A polished case with a concealed hinge and a hinged gold cuvette. White enamel dial with black Arabic numerals, outer minute track with red Arabic five minute numerals, subsidiary seconds dial and blued steel spade hands. One quarter plate calibre movement, nickel, 29 jewels, wolf’s tooth winding, counterpoised straight line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, swanneck micrometre regulator, repeating on gongs activated by a slide on the band. Dial, case and movement signed Tiffany & Co. and numbered.
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Diameter: 48 mm
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Thickness: 12 mm
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Signed: Patek, Philippe & Co.  Genève
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Accompanied by the Extract from the Archives
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The Extract from the Archives confirms that the movement of this watch was sold without a case on May 31st, 1889. This was the normal practice when Patek Philippe supplied movements to the Tiffany Company who preferred to case watches in house. The dial though undoubtedly of Patek manufacture and seemingly original is described as having Breguet numerals, not Dauphine and the movement as being 13 rather than 17 which may be an oversight by the original ledger clerc.