Patek Philippe Perpetual Calendar new the helium escape valve at

the helium escape valve at 10 o’clock has been redesigned with a new conical shape

Low-light legibility is further enhanced by the application of Super-LumiNova® to the watches’ hands and hour markers

bringing together extraordinary design elements that never fail to make an impact

framed by a stunning bezel set with 56 sparkling diamonds

This 44mm model pairs a brushed and polished steel case with a green rubber strap

Patek Philippe Perpetual Calendar new the helium escape valve atWhat youre looking at is arguably one of the most beautiful perpetual calendar watches ever made, full stop. And perhaps one of the most important, too. The reference 3940 was born in 1985, at a time when the watch world was in the midst of the Quartz Crisis and most brands were churning out inexpensive, battery powered watches and struggling to stay afloat. Alas, Patek Philippe was never one to follow the crowd, and released the ref. 3940 perpetual