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The Encyclopedia of Horology

Wristwatch · GMT-Master

Rolex GMT-Master Ref. 1675 'Pepsi' MK4

Partially verified

This vintage Rolex GMT-Master, identified by the source as a 'MK4' variant, dates to approximately 1972. The timepiece features an Oyster case which has been professionally refurbished, noted for its thick lugs and clear chamfers. It is equipped with a rotating bezel with an aluminum red and blue 'Pepsi' insert, also stated to be professionally refurbished. The dial is the 'MK4' variant, characterized by Tritium indices that display patina, complemented by a matching handset. A fourth hand is present for the 24-hour time indication. The watch is currently fitted with a U.S.-made oval-link Jubilee bracelet, featuring a signed blade clasp. According to the seller, the bracelet is period-correct and remains in good condition, appearing to match the case finishing. The overall assembly reflects the design updates implemented in the reference 1675, including crown guards.

Front view of the Rolex GMT-Master Ref. 1675, showing the black 'MK4' dial, red and blue bezel, and Jubilee bracelet.
Front view of the Rolex GMT-Master Ref. 1675, showing the black 'MK4' dial, red and blue bezel, and Jubilee bracelet. — Oliver & Clarke. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
oliverandclarke.com
Category
Wristwatch · GMT-Master
Maker / attribution
Rolex
Reference
1675
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
circa 1972
Source-reported place
Not established

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 Bezel

The watch is housed in an Oyster case, which the auction description reports has undergone professional refurbishment. This maintenance process is noted to have preserved the architectural integrity of the case, specifically the thickness of the lugs and the clarity of the chamfered edges. The case shows light signs of wear, including one scratch.

The watch features a bidirectional rotating bezel fitted with a bi-colored red and blue aluminum insert, often identified as the 'Pepsi' configuration. This component has also been professionally refurbished and is described as being in fantastic condition, retaining the intended color contrast for AM/PM indication.

Evidence for this section
  • “excellent professionally refurbished Oyster case, with thick lugs, clear chamfers”
  • “rotating bezel has also been professionally refurbished and has red/blue 'Pepsi' insert”

Dial and Hands

The watch is equipped with a 'MK4' dial variant, which is stated to be in good condition. The indices are applied and contain Tritium, which has developed a significant, rich patina over time. This aging is consistent across the dial.

The handset is described as matching the dial, featuring central hour, minute, and seconds hands, alongside the signature GMT fourth hand used to track a second time zone via the 24-hour scale on the bezel. The date is visible through a cyclops lens positioned at the 3 o'clock mark on the crystal.

Evidence for this section
  • “The 'MK4' dial inside remains in very nice overall condition, with richly patinated Tritium indices throughout and a matching handset.”

Bracelet and Clasp

The timepiece is mounted on a U.S. oval-link Jubilee bracelet, which is cited as being period-correct to the watch.

The bracelet is secured with a signed blade clasp. The finish and condition of the metalwork are noted to complement the aesthetics of the case, completing the vintage presentation of the reference.

Evidence for this section
  • “fitted to a period-correct U.S. oval-link Jubilee bracelet with a signed blade clasp that is likely unpolished and in excellent overall condition”

Open research questions

  • What is the specific serial number range for this case to verify the production date?
  • Are there specific service records detailing the extent of the refurbishment of the case and bezel?

Source evidence

Recorded claims and source quotations for Rolex GMT-Master Ref. 1675 'Pepsi' MK4
FieldSource-reported valueSource quotation
ModelRolex GMT-Master Ref. 1675“Rolex GMT-Master Ref. 1675”
Dial VariantMK4“The example that we have here is a 'MK4' variant”
Estimated Datecirca 1972“circa 1972”
CaseProfessionally refurbished Oyster case“excellent professionally refurbished Oyster case”
BezelProfessionally refurbished red/blue aluminum insert“rotating bezel has also been professionally refurbished and has red/blue 'Pepsi' insert”
BraceletU.S. oval-link Jubilee bracelet“fitted to a period-correct U.S. oval-link Jubilee bracelet”
IndicesPatinated Tritium“richly patinated Tritium indices throughout”

Visible details

  • Cyclops lens over the date aperture at 3 o'clock
  • Rotating bidirectional 24-hour bezel with red and blue insert
  • Luminous material on indices and hands exhibits yellowed patina
  • Jubilee-style metal link bracelet with integrated folding clasp

Research qualifications

  • The source describes the watch as 'likely unpolished' regarding the bracelet but also confirms professional refurbishment of the case and bezel
  • The exact production year is estimated by the source as 'circa 1972' without reference to a serial number

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

Consulted source

ساعت مچی Rolex GMT-Master رفرنس 1675 مدل Pepsi MK4

Reviewed 2026-11-02 · Record 8a263b83a4

Terms in this record

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

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