Patek Philippe Retrograde Perpetual Calendar 5159R 18K Rose Gold

More about Retrograde Perpetual Calendar 5159R 18K Rose Gold

This is an 18K rose gold Patek Philippe Perpetual Calendar Retrograde 5159R-001. It's an officer's style case with a leather strap and a matching 18k rose gold deployant buckle, and a scratch resistant sapphire crystal. The solid 38mm diameter case, rounded bezel, and straight lugs with gold screwed bars are polished, with a half hunter hinged case back over the sapphire display crystal for viewing the movement. The dial is opaline white with a sunburst guilloche inner circle and painted black radial Roman numeral hour markers in the outer plain reserve, oxidized gold double spade hands, and a gold centered sweep seconds hand. It has an outer 1/5 seconds track, a concentric retrograde sector for the days of the month between 8 and 4 o'clock, and a leap year indicator at 12. There is an aperture window for the days of the week at 9 o'clock, a window for the month at 3 o'clock, and a subsidiary moon phase dial at 6. It's water resistant to 25 meters/80 feet, it has a 45-hour power reserve at full wind, and the 12.4 mm thick case, dial, and movement are all signed. This Patek Philippe Perpetual Calendar Retrograde 5159R-001 has a mechanical automatic self-winding Patek Philippe caliber 324 S-QR movement that's rhodium-plated, with fausses cotes embellishment, and it's stamped with the Patek Philippe seal quality mark. It's constructed with 31 jewels, and a shock absorber mechanism. It includes a straight-line lever escapement, a Gyromax balance adjusted to heat, cold, isochronism and 5 positions, a self-compensating free-sprung flat balance spring, and a 21K gold rotor. The mechanism oscillates at a frequency of 28,800 vph. (4 Hz).

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