Rolex Sea-Dweller Ref 1665 DR MK4

Year of issue: 1977
Reference number: 1665
Condition: mint
Status: sold
Dealer country: Switzerland
Price in US $ n/a


Very nice 1665 double red MK 4 dial, with original tritium hands, bezel, bracelet 93150/585, serial 5.9 mio, from 1977


Laurent Ponti


1967 saw the launch of the Oyster Perpetual Sea-Dweller, waterproof to a depth of 610 metres. To meet the needs of professional deep-sea divers, the case was equipped with a helium escape valve so that, during long decompression phases in hyperbaric chambers, the helium from the gas mixtures used could be released without risking damage to the watch. Learn more about the first Seadweller from my RPReport by following this link...

SEA-DWELLER 4000 - 1978

Rolex launched the Sea-Dweller 4000, waterproof to a depth of 1,220 metres (4,000 feet).