Featuring its iconic porthole-shaped bezel, the Nautilus was inspired by Patek Philippe owners the Stern family’s love of sailing. Launched in 1976, it marked the company’s first step into luxury sports watches and went on to become one of Patek’s most successful watches of all time. We’d go as far as to say it’s one of the most sought-after chronographs on the planet. It even provided the inspiration for the much-loved Aquanaut two decades later. The reference 5980, introduced in 2006 to celebrate the 30th anniversary of the model’s original release, was the first chronograph that didn’t lose time when left on all day. This pre-owned model from 2010 has a black dial, steel case and strap, and an automatic movement.