An early 20th Century Swiss Gondolo "chronometer" lever watch by Patek Philippe in a gold open face case. High quality keyless gilt bar movement with going barrel. Plain cock with polished steel micrometer regulator adjusted by a snail cam, steel pointer on the plate. Compensation balance with blue steel overcoil hairspring. Club foot lever escapement, the lever with counterbalance extension arms extended beyond the pallets. Escape and lever pivots with endstones in polished steel settings. Snailed steel wolf’s teeth winding work. Signed white enamel dial with subsidiary seconds, Roman and Arabic numerals, gilt hands, blue steel seconds hand. Substantial 18 carat open face case with faded engine turning, gold cuvette bearing the inscription "Chronometro Gondolo ? 168153 Patek, Philippe & Cie, Geneve. ? Fabricado expressamento para Gondolo & Labouriau Relojociros Rio de Janeiro". Accompanied by a certificate from Patek Philippe.