New and noteworthy: Audemars Piguet Royal Oak 25820SP Perpetual Calendar There is no doubt: the Audemars Piguet Royal Oak is one of the most iconic watches of the last century. Its instantly recognizable shape is still the focus of debate among many collectors, and its incredible popularity among elite tastemakers makes it more like a lightning rod for popular shooting. No matter where you stand on this bold timepiece, the Audemars Piguet Royal Oak 25820SP perpetual calendar undeniably offers a lot. At a time when the price of steel watches was very weird, this charming stainless steel and platinum watch, equipped with perpetual calendar complications, was beyond our expectations and beckons us to take a closer look. So let's get started, shall we?