*Unpolished* 1988 Rolex Sea-Dweller (Ref. 16660) "Frozen Dial"

There is steep competition between Rolex models when considering the historical significance each of them carries across the board, however, the Sea-Dweller is undoubtedly one of the most important watches ever created. First introduced in 1967 with the reference 1665, the Sea-Dweller featured innovative patented technology that helped further human exploration to parts otherwise considered impossible to reach. In collaboration with Comex and utilized in the famed SeaLab missions, the Sea-Dweller built upon the existing Rolex Submariner platform to increase the depth rating of the watch to an impressive 2000ft. This impressive increase in possible depth was the result of bulking up of the case, but more importantly, the invention and development of the Helium Escape Valve or HEV which allowed for helium molecules to transfer in and out of the watch case without damaging the watch. Rolex implemented major improvements to the Sea-Dweller model starting in 1981 with the introduction of t