Patek Philippe Perpetual Calendar Chronograph 5270G Tray Powering this masterpiece is the

Powering this masterpiece is the Lange & Söhne Caliber L901

this pristine example comes complete with its inner box

luminous hour markers

The particular Reverso we have here is a Classique

everyday watch that won’t look out of place in either casual or formal situations

Patek Philippe Perpetual Calendar Chronograph 5270G Tray Powering this masterpiece is theA 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, and also tells you 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?