The outer case only had two pieces
blued sweep hands in the twin chronograph registers
aside from a slight patination to that gorgeous Tritium
Dating to circa 1958-1959
Alberto quickly made significant breakthroughs in the history of early flight
Patek Philippe Perpetual Calendar Strap The outer case only hadA 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 has