Patek Philippe Tonneau Perpetual Calendar Strap A solid 18k yellow gold

A solid 18k yellow gold Oyster case

it resembles a seesaw

and shielded the sensitive movements from the dusty conditions of the battlefield

” and the fighter pilots were the heroes to whom everyone in England looked for inspiration

and an excellent entry point for any collector and any wrist

Patek Philippe Tonneau Perpetual Calendar Strap A solid 18k yellow goldA 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