Swiss large yellow gold keyless chronometro Gondolo Circa 1915

Chronometro pocket watch for Gondolo & Labouriau
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A very fine large 18 Carat yellow gold keyless Chronometro Gondolo pocket watch, made by Philippe & Cie., Genève, Switzerland 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, 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