Rolex Sea-Dweller 1665 Great White MK1 Dial with Box and PapersThe Rolex Sea Dweller Reference 1665, introduced around 1967, was developed for saturation diving, featuring a groundbreaking helium escape valve and 2,000 ft (610 m) water resistance. Known for the Double Red (DRSD) dial from 19671977, it later transitioned to the all white Great White dial before being replaced in the 1980s by the reference 16660 sapphire crystal model. Interestingly, Great Whites tend to trade at significantly lower prices than