Very fine 18 carat yellow gold keyless pocket watch Circa 1910

Large yellow gold keyless Swiss pocket watch
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A very fine, large, 18 carat yellow gold, keyless Swiss pocket watch. Made by Patek Philippe & Cie., Genève, Circa 1910.
Four-body case, bassine and polished. Hinged gold cuvette.
White enamel dial with radial Roman numerals, outer minute track, and subsidiary seconds. Blued steel spade hands.
Matte gilt brass movement with patented bridge calibre, 20 jewels, Wolf’s tooth winding, gold wheel train, straight-line moustache lever escapement, cut bimetallic compensation balance with blued steel Breguet balance spring and a micrometric cam regulator. Dial, case, cuvette and movement signed and cuvette numbered with movement number.
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Diameter: 53 mm
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Signed: Patek Philippe & Cie., Genève