ROLEX COMEX Sea Dweller Rail Dail Ref. 1665, 1977

Year of issue: 1977
Reference number: 1665
Condition: worn
Status: sold
Dealer country: Germany
Price in EUR € n/a


ROLEX COMEX Sea Dweller  Rail Dail Ref. 1665, wot ID: 25822

  • CASE screwed case, steel, acrylic glass domed, rotating bezel, screw-down crown, helium valve, d=40mm
  • MOVEMENT caliber Rolex 1570, automatic, chronometer, date
  • DIAL original Tritium.dial and hands, RAIL DIAL "600"meter
  • BRACELET heavy oyster bracelet, fliplock deployant clasp
  • * COMEX, very rare 600meter Rail Dail version
  • very nice condition
  • 1977
  • Price on request


Ralf Meertz


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).