Patek Philippe 3940J Perpetual Calendar 18K Yellow Gold (24510)
24510 Patek Philippe 3940 J Perpetual Calendar, 3940J, 18k yellow hold on a strap with a 18k yellow gold deployment buckle, automatic perpetual calendar(english) with, day, date, month, moonphase, 24 hours indicator, leap year indicator, applied gold index numerals, silver dial, sapphire crystal, water resistant, diameter: 36mm, thickness: 9mm, Like New with original box and papers dated July 1993. The watch just received a complete service from Patek Philippe London.SOLD
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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 case, dial, and movement are all signed.
The automatic caliber 240-Q movement is 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.
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 recent incarnation was introduced in 1985 and was discontinued in 2006.