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The Encyclopedia of Horology

Wristwatch · Diver's watch

1984 Rolex Sea-Dweller (Ref. 16660)

Partially verified

This 1984 Rolex Sea-Dweller, reference 16660, is a stainless steel dive watch. It features a glossy black dial with tritium lume plots and white gold surrounds, housed in a 40mm stainless steel case. The movement is the Rolex Calibre 3035, which incorporates a Quick-Set date function. Design features include a uni-directional bezel, a helium escape valve, and a sapphire crystal. The watch is fitted with a Rolex Oyster 93160 bracelet with 592 solid end links. The timepiece was designed for increased depth utility with a tested depth rating of 1220m. The auction description reports that the dial has a speckled patina and the lume has aged to a creamy color.

Front view of the 1984 Rolex Sea-Dweller Ref. 16660
Front view of the 1984 Rolex Sea-Dweller Ref. 16660 — Craft & Tailored. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
craftandtailored.com
Category
Wristwatch · Diver's watch
Maker / attribution
Rolex
Reference
16660
Catalogue / lot identifier
RLXSD1666084-3
Source-reported date
1984
Source-reported place
Not established
Source-reported serial
820XXXX

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Case and Dial

The timepiece is constructed with a stainless steel case measuring 40mm in diameter. The dial is finished in glossy black, featuring applied lume plots enclosed within white gold surrounds, a configuration described by the source as the 'Bicchierini Dial'. The tritium luminescent material applied to the dial and hands has developed a creamy patina over time.

The watch utilizes a sapphire crystal and a uni-directional rotating bezel. A helium escape valve is integrated into the side of the case to facilitate use during deep-sea diving activities. The crown is identified as a 'Trip-Lock' type. The auction description reports the case is lightly polished with thick lugs and the dial shows a consistent speckled patina.

Evidence for this section
  • “The sapphire crystal became standard starting with the Ref. 16660 and major developments were implemented into the model which included a uni-directional bezel”
  • “The excellent glossy black dial had taken on a consistent speckled patina.”

Movement and Functionality

The watch is powered by the Rolex Calibre 3035 movement. This mechanism introduced the Quick-Set date function, allowing for independent adjustment of the calendar display. The movement is rated for accurate timekeeping at COSC standards following a recent service.

The Ref. 16660 was designed to replace the previous Ref. 1665, increasing the tested depth rating from 610 meters to 1220 meters. The inclusion of the Quick-Set feature represented a modernization of the Sea-Dweller line during the early 1980s.

Evidence for this section
  • “The Sea-Dweller also received a new movement, the Cal. 3035 which allowed for Quick-Set date function.”
  • “The ref. 16660 had an increased tested depth rating of 1220m as opposed to the previous 610m found in the Ref. 1665.”

Bracelet and Accessories

The auction description notes that the bracelet remains in unpolished condition with minimal wear or stretch.

No original papers, boxes, or additional accessories are included with the timepiece.

Evidence for this section
  • “The original Rolex 93160 Oyster Bracelet with 592 SEL is in superb unpolished condition showing little wear and no stretch.”
  • “None. The watch was just serviced and is running at COSC spec”

Open research questions

  • Does the serial number 820XXXX precisely correlate to a 1984 production year?
  • What are the specific variations in the 'Bicchierini' dial transition during the mid-1980s?

Source evidence

Recorded claims and source quotations for 1984 Rolex Sea-Dweller (Ref. 16660)
FieldSource-reported valueSource quotation
MakerRolex“Vendor: Rolex”
Reference16660“1984 Rolex Sea-Dweller (Ref. 16660)”
Depth Rating1220m“The ref. 16660 had an increased tested depth rating of 1220m”
Bracelet93160“Rolex Oyster Flip lock 93160 & Rolex 592 SEL End Pieces”
MovementCaliber 3035“The Sea-Dweller also received a new movement, the Cal. 3035”

Visible details

  • Glossy black dial with white gold surrounds on lume plots
  • Rolex Triplock crown visible on case side
  • Helium escape valve on case flank
  • Oyster bracelet with flip-lock clasp

Research qualifications

  • Specific production date based on serial number is an estimate
  • Relationship with COMEX is mentioned as context rather than specific provenance for this unit

Photograph identity and source facts were screened before import; rights clearance remains pending.

Consulted source

ساعت مچی غواصی Rolex Sea-Dweller رفرنس 16660 مدل 1984

Reviewed 2026-11-02 · Record 847a7fb93f

Terms in this record

Glossary explanations for terms named in this object’s record.

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