Rolex Explorer II 16570 Black Dial

Reference 16570 is a previous-generation Explorer II, produced in a 40mm Oystersteel case with a black dial and the fixed 24-hour bezel that has defined the model since its original 1971 launch as a tool watch for cave and polar explorers who needed to distinguish day from night in environments without natural light cues. The orange 24-hour hand is the model's signature detail, sized and coloured specifically to be read at a glance against the black dial.

At 40mm, this generation sits smaller and closer to the Explorer II's original tool-watch proportions than the current 42mm model, and the dial uses printed rather than applied hour markers on select dial variants from this era, a detail worth confirming against the specific piece being sourced. The case lacks the crown guards fitted to later generations, giving the profile a flatter, more restrained look from the side compared with the current Explorer II.

Earlier Explorer II references like 16570 are sourced by buyers who specifically want the smaller case size or the model's tool-watch history over the current generation's larger, more contemporary proportions. Dial and hand originality are checked especially closely, since both are common points of aftermarket alteration on collectible steel Rolex references. Given the model's age, movement service history and any signs of case polishing beyond factory specification are checked especially closely before a piece from this generation is offered. Every watch Clutch sources is independently reviewed through Legit Grails, with condition documented and an authentication outcome shared directly. Enquire to discuss this piece.