Patek Philippe. A fine and rare 18ct gold perpetual calendar automatic wristwatch
Ref: 5136J, Case no. 3126610, Circa 2005
27-jewel, Cal.240Q, straight line lever escapement, free-sprung Gyromax balance adjusted to heat, cold, isochronism and 5 positions, shock absorber, self compensating flat balance spring, 22ct gold mini rotor, seal of Geneva quality mark, silvered dial with gold applied hour markers, subsidiary dials for date, days, 24 hours, month and leap year, aperture for moon phases at 6, polished 18ct gold case with display screw down case back, sapphire crystals, 18ct gold PP bracelet with folding buckle, fitted original box and certificate, case, dial and movement signed 37mm.