WAY BACK WHEN

In 1953, the same year the Submariner was released, Rolex collaborated with a Swiss scientist named Auguste Piccard, who had invented the deep-sea diving bathyscaphe

the Oyster Perpetual Sea-dweller Submariner 2000 Ref 1665. Capable of depths of up to 610m, this was the very first Rolex Sea-dweller and it is essentially a Submariner Ref 5513 with triple the depth rating, a much thicker crystal, and a case reinforced with a one-way helium escape valve, as well as a patented triplock crown. Notably, it was Rolex and another watch company, Doxa S A, that co-created the helium escape valve, which is today a requisite feature in all mechanical dive watches. Ref 1665 was famously nicknamed the Double Red because of the two lines of text printed in red that read “Sea-dweller” and “Submariner 2000”. Like the Submariner, it has only 15min markings but differs in that