Patek Philippe Retrograde Perpetual Calendar World Timer The movements were fitted in

The movements were fitted in sterling silver cases

sharp-eyed collectors have been quietly scooping up interesting and important models

what seemed like the entirety of the watch community stood back and gawked for its clearly

the chronograph operates beautifully

Several of the great watch manufactures — Omega

Patek Philippe Retrograde Perpetual Calendar World Timer The movements were fitted inA 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 has