MK Personal Collection Men's Steel Rolex Sea-Dweller Ref 1665 Waterproof Wristwatch Circa 1975

The Estate Department Collection
In stock
More Information
Item Number 114419
Weight 1.0000
Brand Rolex
Band Size 8 inches in length including the watch
Band Stainless Steel
Box & Papers None
Caliber 1570
Case Metal Stainless Steel
Serial Number on Case 4.410.046
Circa 1975
Condition Very Good
Notes About Condition The case is signed Orig Rolex Design , very strange only started in 1981 need more research, Rolex service dial Replacement .
Serial Number on Movement D791.593
Crown Set Yes
Crown Wind Yes
Crystal Plastic
Dial Refinished
Escapement Lever
Gender Men's
Hands Skeleton
Jewels 26
Lug to Lug Measurement 42.75mm including the crown X 47.75mm lug to lug.
Model sea-dweller
Movement Automatic
Reference 1665
MK Personal Collection Rare Men's Steel Rolex Sea-Dweller Ref 1665 Waterproof Wristwatch Circa 1975.  This watch has become highly collectible in the secondhand Rolex watch market and this model is 100% correct down to the bracelet. The watch features a three-body case construction, polished and brushed, helium escape valve at 9 with graduated revolving black bezel for the decompression times “trip lock” winding crown protected by the crown guard, screw-down back and crown Serial #4.410.046 Ref 1665. The watch is attached to a steel oyster bracelet #585/93105 which is the correct numbers for this series.  It has a Cal. 1570 rhodium-plated, “oeil-de-perdrix” decoration Rolex movement with 26 jewels, straight-line lever escapement, monometallic balance adjusted to 5 positions and temperature, shock absorber, self-compensating free-sprung Breguet balance spring with hack mechanism that is in running condition Serial # D791.593. It is topped with a Rolex Service black dial with white markers and date at 3:00 o'clock.  It is stamped on the inside back cover with Ref 1665. The Sea-Dweller was first developed to fulfil a narrow mission statement: survive the harsh deep-sea conditions of saturations divers. In the late 1960s, oil and gas exploration moved offshore, creating a new need for divers to go deeper than ever before and spend extended periods of time underwater, welding pipelines or installing underwater communications cables for hours at a time. The United States navy experimented with underwater habitats to prove the viability of saturation diving during SEALAB. Keeping the same reference number, it introduced a range of new features produced for a short period of 5 years, with the current example having been manufactured in 1975. The most notable difference was the replacing of red text on the dial with white writing, hence the nickname ‘Great White’, bestowed upon it by collectors. The ‘SUBMARINER 2000’ writing on the dial was also removed, clearly indicating that the Sea-Dweller would exist as its own model
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