Audemars Piguet’s new Royal Oak Perpetual Calendar is a very clever piece of engineering, an answer to a problem that’s been annoying watchmakers and collectors for decades, which is this. QPs, as ...

In 1972, Audemars Piguet’s groundbreaking Royal Oak rewrote the rules on luxury watches ... watches and turned to quartz. Others went out of business. But for some, like Audemars Piguet, it ...