Patek Philippe Grand Complications Perpetual Calendar Retrograde Angelus on the dial

on the dial

resulting in far fewer executions worth collecting

We treated this special example to a full case restoration and refinishing nearly 4 years ago

The timepiece you're looking at is a Reference 16520 Cosmograph

Patek Philippe Grand Complications Perpetual Calendar Retrograde Angelus on the dialA perpetual calendar is like a small computer on your wrist. Think of it this way: Imagine a watch that keeps track of not only the time, but also the date, the day of the week, and the month, as well as whether its a leap year or not, and what the current phase of the moon is. Oh, and one more thing imagine it does all of this mechanically, using springs and gears, and that you only have to adjust it once every century or so. Crazy, right? Patek