Patek Philippe Grand Complications Perpetual Calendar Retrograde Angelus Fitted to a signed brown

Fitted to a signed brown leather strap with a matching 18k white gold deployant clasp

there's another Fliegeruhr that has attained a kind of cult-like status among collectors: the Heuer Bundeswehr

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

This piece is without question one of the earliest

crisp dial with light even patina

Patek Philippe Grand Complications Perpetual Calendar Retrograde Angelus Fitted to a signed brownA 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