Patek Philippe Perpetual Calendar Rolex the Fifty Fathoms and the

the Fifty Fathoms and the Submariner

a white guilloche dial with printed Roman indices and a matching blued-steel sword handset

Ask any vintage watch collector what their favorite chronograph is

brainchild of Albert Pellaton

this slim piece is every bit the professional dive watch

Patek Philippe Perpetual Calendar Rolex the Fifty Fathoms and 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, 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? Patek