Patek Philippe Perpetual Calendar Chronograph Ref: 5970 in Platinum. Manufactured from 2004 to 2011, reference 5970 was Patek Philippe’s very last perpetual calendar chronograph wristwatch series to use a Lemania 2310 based movement. With the introduction of successor reference 5270, Patek Philippe used its own in-house movement.
Due to its generous and modern case proportions, this reference is a favorite among the watch community. Since the model stopped production, it has only increased in popularity and collectability. Compared to its predecessor, reference 3970, reference 5970 has a much larger and heftier case size of 40 millimeters.
While the reference has enjoyed variations such as different gem-set bezels and various dial designs, examples cased in platinum like this watch are the true classics. The black dial immediately distinguishes the case metal, as does the subtle diamond between 6 o’clock – both indicate Patek Philippe’s use of platinum.