Rolex Double Red Sea-Dweller Ref. 1665 Mk. IV
Record status
Individual type · partial
Period
1977
Maker / issuer
RolexThis Rolex Sea-Dweller, reference 1665, is a transitional model from 1977. It is classified as an Mk. IV iteration, characterized by the 'Double Red' text on the dial.
The watch is housed in a 40mm stainless steel case, which features a helium escape valve and an original 'round text' case back. The dial is matte black with tritium hour markers and hands that have patinated to a cream color. The watch is paired with an Oyster 93150 bracelet with 585 end links and includes its original box and documentation. The movement has reportedly undergone a complete service.
Evidence at a glance
- Linked sources
- 1
- Photograph views
- 1
- Catalogue references
- 0
Counts describe this entry’s documentation, not authenticity, rarity or completeness. Photographs may show one specimen; check each caption and licence.
Technical characteristics
- Type
- Diving watch
- Crystal Type
- T39 Super Dome
- Dial Version
- Mk. IV
- Case Diameter
- 40 mm
- Place recorded
- Switzerland
- Water Resistance
- 610 meters
- Movement Condition
- Recently serviced
- Maker / attribution
- Rolex
Design
- Visible features
- • Cream-colored tritium hour markers and hands • Fat-font bidirectional bezel insert • Matte black Mk. IV dial • Oyster 93150 bracelet with 585 end links
- Case and Dial Design
- The watch features a 40mm stainless steel case. According to the source, the case retains its original chamfers, showing only minor signs of use. The bidirectional bezel is fitted with an original 'fat-font' insert that has developed a dark gray patina, with the tritium pearl still present at the 12 o'clock position. The crystal is an original T39 Super Dome. The dial is a matte black Mk. IV version, which includes the distinctive double-red text. The hour markers have aged to a cream color, matching the original tritium hands. The source notes that the calendar disc is original, featuring 'open' numerals for the six and nine. The case back is specified as the 'round text' version, associated with the transition to the subsequent model. The watch is equipped with a helium escape valve, a feature developed for saturation diving.
- Movement and Functionality
- The movement within this Sea-Dweller is stated to be running accurately following a recent, complete service. The mechanical functions include the time and a date display, supported by the specific helium release functionality intended for deep-sea diving environments. No internal imagery of the movement is provided, but the source asserts that the watch is a functional specimen from 1977. Tests conducted under ultraviolet light on the dial and hands indicated no degradation, according to the provided documentation.
- Provenance and Documentation
- It is identified by the serial number in the 5.2 million range, placing its production in 1977. The watch is also paired with a stainless steel Oyster 93150 bracelet featuring 585 end links and a diving extension link. The platform specifies that the technical information and stated condition are based on data provided by the original source and seller. It explicitly states that it does not independently verify the authenticity of parts or their functional status.
Identification
- Reference
- 1665
- Serial number
- 52XXXXX
- Source note
- Facts transcribed from the linked source listing or collection record. Attribution and specifications are source-reported and have not been independently authenticated.
Catalogue references
No catalogue numbers recorded. Numbers are only published once transcribed from a verified edition of a standard catalogue — they are never inferred.
Research required
- Research required: Authentication of individual components not independently verified by the platform
- Research required: Exact serial number partially masked in source