Patek Philippe 3940J Perpetual Calendar 18K Yellow Gold (32146)

32146 Patek Philippe 3940 Perpetual Calendar 3940 J, 18k yellow gold on a strap with an 18k yellow gold tang buckle, automatic Patek Philippe caliber 240 Q movement with micro-rotor, silver dial with applied yellow gold hour markers, yellow gold dauphine hands, perpetual calendar (in Italian) with day, date, month, moonphase, 24-hour indicator, leap year indicator, sapphire crystal with display caseback, water resistant, diameter: 36mm, thickness: 9mm, Like new with original box, setting stylus, and archive papers showing an original date of sale in January of 1993.


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More about Patek Philippe 3940J Perpetual Calendar 18K Yellow Gold

This is an 18K yellow gold Patek Philippe Perpetual Calendar 3940J. The solid, round, polished case has a stepped bezel with straight lugs. The month and leap year are displayed on a sub dial at 3 o'clock. The date and moon phase sub dial is at 6 o'clock, with the day and 24-hour time at 9. It has a matte silver dial with applied yellow gold hands and baton hour markers, and exterior dot minute indexes. It has a 46-hour power reserve and it's water resistant to 25m. The 9mm thick case, dial, and movement are all signed.

This Patek Philippe Perpetual Calendar 3940J has a mechanical automatic self-winding caliber 240-Q movement. It's rhodium-plated with fausses cotes decoration, and it has the Seal of Geneva quality stamp. It's constructed with 27 jewels, 275 parts, and a lateral lever escapement with three arms under a polished steel bridge. It has a 22K winding rotor and the patented Patek Philippe gyromax balance that adjusts for cold, heat, isochronism and 5 positions. It includes a shock absorber mechanism, and a self-compensating free-sprung Breguet balance spring. The leather strap has a matching yellow gold deployant buckle. The mechanism oscillates at a frequency of 28,800 mph (4 Hz).

Patek Philippe made the very first perpetual calendar wristwatch in 1925. It's an incredible calendar innovation that self-adjusts for the months that have only 28 or 30 days, as well as for leap years. This Patek Philippe Perpetual Calendar 3940J was introduced in 1985 and was discontinued in 2006.