Rolex 1665 is the original reference of the Rolex Sea-Dweller. When the model was introduced, it was the perfect diving watch and enabled divers to use the watch at a lower depth, thanks to a specially developed helium valve. Auction number 61 has been with the current owner since it was new in 1977 and has been on his wrist for many diving adventures worldwide.
During the first years of production of the Rolex Sea-Dweller, the text "Sea-Dweller" and "Submariner 2000" are written in red on the dial. Hence these models have been nicknamed "Double Red" and are highly collectable by collectors worldwide.
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