This vintage, steel Rolex Explorer ref. 6610 watch from the late 1950s is a beautiful example of a now iconic tool watch. It has its original, gilt chapter-ring black dial with subtle patina on the Radium hour markers. It also has its original, crazed domed plexiglass.

The reference 6610 is something special. The predecessor to the 1016, only a handful were made, in comparison to the Explorer’s longer-running production reference. This particular case dates to 1957/58 (serial 268 XXX); a very early example of a rare watch.

The Rolex Explorer was first introduced in 1953. Beginning as a prototype designed specifically for professional use. Typically thought of as the most rugged of the oyster family, the Rolex Explorer has always been closely-associated with the rigors of international adventure and exploration. Famously tested during the Himalayan expeditions, there aren’t many mechanical timepieces more deserving of the reputation.

The case of this Rolex is in excellent condition. The brushing on top of the lugs is consistent, while the spring-bar spaces show little sign of elongation. The flat bezel is sharp and gives the watch an appropriate utilitarian feel.