Swiss pink gold keyless Chronometro Gondolo pocket watch Circa 1915

Chronometro Gondolo pocket watch
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A very fine, large, 18 Carat pink gold keyless Chronometro Gondolo pocket watch, made by Philippe & Cie., Genève for Gondolo & Labouriau, Relojoeiros, Rio de Janeiro, circa 1915. Four body and bassine case with engine-turned back and hinged gold cuvette.
White enamel dial with radial Roman numerals, outer Arabic minute track and sunk subsidiary seconds and gold spade hands. Frosted gilt movement with patented bridge calibre, 21 jewels, wolf’s tooth winding, gold wheel train, straight-line moustache lever escapement, cut bimetallic compensation balance with blued steel Breguet balance spring and Wilmot’s patented micrometric cam regulator.
Dial, case, cuvette and movement signed.
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Diameter: 56 mm
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Signed: Patek, Philippe & Cie. Genève