Pre-Owned Patek Philippe Grand Complications 3940J

Patek Philippe launched the 3940J in 1985 at the height of the quartz crisis. The 36mm, 8.8mm-thin yellow gold case houses caliber 240 Q, a 3.75mm micro-rotor automatic carrying a full perpetual calendar with day, date, month, leap year, and a moonphase accurate to within one day every 122 years. Production ran 1985 to 2007 across three distinct series, with total output estimated at 7,000 to 8,000 examples; first series pieces, produced in roughly 1,300 to 1,500 units, command meaningful premiums at auction over later examples, and former Patek CEO Philippe Stern wore one as his personal watch. Every 3940J available at The 1916 Company is fully authenticated and backed by our 2-year warranty.