Patek Philippe 5960P-001 Annual Calendar Chronograph Platinum Grey Dial UNWORN DOUBLE SEALED (29359)

29359 Patek Philippe 5960 P Annual Calendar Chronograph, 5960P-001, Platinum on a strap with an Platinum deployant buckle, Automatic movement, annual calendar, day, date, month, power reserve indicator, chronograph with flyback function, centered sweep seconds hand, grey dial with applied stick markers, diameter: 40.5mm, thickness: 13.55mm, sapphire crystal, display back, water resistant, Double Sealed and Unworn with Original Box and Papers dated September 2008.

$56,900

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More about Patek Philippe 5960P-001 Annual Calendar Chronograph Platinum Grey Dial UNWORN DOUBLE SEALED

This is a platinum Patek Philippe Annual Calendar Chronograph 5960P-001. The anthracite grey dial has applied white gold faceted baton hour markers, luminous dots, and white gold luminous feuille hands, as well as a center sweep seconds hand. It has outer minute and 1/5th seconds divisions, and a guilloche silver subsidiary dial for the combined 30/60-minute and 12-hour totalizer. There is a power-reserve indicator at 12 o'clock, apertures for the days of the week, the date, the months, as well as a day/night indicator. It has a round button fly back chronograph and it's water resistant to 30 meters. There are correctors in the band and a screw-down transparent sapphire crystal case back. The alligator leather strap includes a matching platinum deployant clasp. The case, dial, and movement are all signed.

The self-winding calibre CH 28-520 IRM QA 24H movement is rhodium-plated with causses cotes embellishment and it's stamped with the Seal of Geneva quality mark. It's constructed with 40 jewels, 456 parts, and a straight-line lever escapement. There is a shock absorber mechanism and the patented Patek Philippe Gyromax balance that compensates for cold, heat, isochronism, and 5 positions. It has a self-compensating free-sprung Breguet balance spring, and a 21K gold rotor with oil-free ball bearing and zirconium balls. It has a power reserve of up to 55 hours

In 1996 Patek received a patent for their Annual Calendar mechanism, while their annual calendar watch (only having to be manually adjusted once every 365 days) was selected watch of the year in the Basel show. They've been making the finest chronographs since the 1920's; this complicated model was introduced in 2006.