Rolex Sea-Dweller Double Red Ref 1665 MK IV

Additional images

Model: ,

Year of issue: 1978

Reference number: 1665

Serial number: 5.2 mio

Condition: mint

Status: sold

Dealer country: Switzerland

Price in US $: n/a

Watch details

Vintage SD 1665 with perfect MK4 dial, correct case back, serial 5.2 mio, from 1978, comes with a Rolex box. Original warranty is missing


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).