Swiss gold watch made for the Brazilian market Circa 1905

Gold watch made for Gondolo & Labouriau
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A Swiss 18 carat yellow gold keyless Chronometer Gondolo pocket watch, made by Patek, Philippe & Cie. Genève, circa 1905. Made for the Brazilian market. A polished open faced case with a hinged gold cuvette and an engine turned case back. Made for Gondolo & Labouriau, Relojoeiros, Rio de Janeiro. White enamel dial with radial Roman numerals, outer Arabic minute track, sunk subsidiary seconds and yellow gold spade hands. A gilded brass movement, with going barrel, train of gold wheels, straight line equilibrated lever escapement, à moustaches, compensated balance with gold poising screws and blued steel hairspring with terminal curve, patented index regulator with swanneck spring and micrometric screw. Dial, case and movement are signed.
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Diameter: 56 mm
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Signed: Patek, Philippe & Cie.  Genève
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Some hairlines on the dial.
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Movement based on the French invention patent No. 142 376, delivered on April 16, 1881, to Jean-Adrien Philippe 1815-1894, Geneva, for a régulateur de precision (precision-regulating device for fast/slow by means of an eccentric snail). Movement also based on the Swiss invention patent No. 2 680, delivered on September 27 1890, to Patek, Philippe & Cie, Geneva, for a Remontoir avec mise à l’heure perfectionné (the definitive version of the keyless-winding and setting device), and, on the US design patent No. 20 483, delivered on January 13, 1891, to Adrien Philippe, Geneva, for a Watch bridges for Watch-Movements.Cuvette (dome) engraved in taille-douce (fine cut)with the mention “chronometro gondolo / Fabricado expressamente para Gondolo & Labouriau Relojoeiros / rio-de-janeiro”.