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The Encyclopedia of Horology

Wristwatch · Self-winding GMT wristwatch

Rolex Oyster Perpetual GMT-Master Ref. 1675

Partially verified

This Rolex Oyster Perpetual GMT-Master, reference 1675, is a stainless steel, self-winding, tonneau-shaped aviator’s wristwatch produced circa 1972. The watch features a 39.5 mm diameter case with a water-resistant screwed case-back and crown guards protecting the winding crown. It is equipped with a 24-hour graduated bidirectional revolving bezel with a blue and red insert for AM-PM indication. The black “Swiss - T <25” dial includes a date aperture at the 3 o’clock position and a central hour index for diurnal and nocturnal hours. The movement is a self-winding caliber 1570, signed by Rolex. The watch is completed with a stainless steel Rolex U.S.A. riveted “Osyter” bracelet with a deployant clasp dated 7-72. The dial, case, and movement are signed by the manufacturer, and the timepiece is certified as a Superlative Chronometer.

Rolex Oyster Perpetual GMT-Master Ref. 1675, showing the bidirectional blue and red bezel, black dial with cyclops date, and riveted Oyster bracelet.
Rolex Oyster Perpetual GMT-Master Ref. 1675, showing the bidirectional blue and red bezel, black dial with cyclops date, and riveted Oyster bracelet. — Antiquorum. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
catalog.antiquorum.swiss
Category
Wristwatch · Self-winding GMT wristwatch
Maker / attribution
Rolex
Reference
1675
Catalogue / lot identifier
87
Source-reported date
circa 1972
Source-reported place
Switzerland
Source-reported serial
3 266 971

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 housed in a stainless steel, tonneau-shaped case measuring 39.5 mm in diameter. It features a water-resistant construction with a screwed case-back. A bidirectional revolving bezel with 24-hour graduations includes a blue and red insert, which serves the AM-PM indication function. Protection for the winding crown is provided by integrated crown guards.

The black dial, marked "Swiss - T <25," is configured with centre-seconds, an instantaneous date aperture at the 3 o'clock position, and a central hour hand for 24-hour timekeeping. The auction description reports the presence of a “long E” logo on the dial. The overall condition of the case and dial is reported by the auctioneer as showing signs of oxidation.

Evidence for this section
  • “Stainless steel, self-winding, tonneau-shaped, aviator’s wristwatch, water-resistant with screwed case-back, winding crown protected by the crown guards”
  • “24-hour graduated bidirectional revolving bezel with blue and red insert for the AM-PM indication”
  • “black “Swiss - T <25” dial with centre-seconds”
  • “Dial: 3-7-01 Good Oxidized”

Movement and Functionality

The watch is powered by the Rolex caliber 1570, a self-winding mechanical movement. The timepiece functions as a chronometer, officially certified by the manufacturer. The watch provides two primary horological complications: an instantaneous date display and a dual-time zone function represented by the 24-hour AM-PM scale.

The movement is signed by Rolex and bears the serial number D 420 324. While the mechanical performance is not detailed beyond the manufacturer's certification grade, the auctioneer has provided a grading assessment for the movement component.

Evidence for this section
  • “self-winding, tonneau-shaped, aviator’s wristwatch”
  • ““Superlative Chronometer Officially Certified””
  • “Movement No. D 420 324”
  • “Caliber 1570”

Provenance and Identification

This specific example is catalogued under lot number 87. It is accompanied by a stainless steel Rolex U.S.A. riveted Oyster bracelet with a deployant clasp, which is stamped with the date code 7-72. The watch is dated circa 1972, with the reference 1675 specifically noted as dated III.72.

The manufacturer has applied signatures to the dial, case, and movement. The auction description provides a formal grading report for the object, classifying the watch condition under an AAA grade, with specific internal component gradings noted for the case, movement, and dial.

Evidence for this section
  • “Rolex U.S.A. riveted “Osyter” bracelet with deployant clasp (7-72)”
  • “Reference 1675 (dated III.72)”
  • “Signature dial, case and movement”
  • “Grading System Grade: AAA Excellent”

Open research questions

  • Does the dial's 'long E' configuration correspond to specific production batches within the 1972 timeframe?
  • Is the U.S.A. riveted bracelet an original factory-fitted component for this specific reference?

Source evidence

Recorded claims and source quotations for Rolex Oyster Perpetual GMT-Master Ref. 1675
FieldSource-reported valueSource quotation
MakerRolex“Rolex, Geneva”
ModelOyster-Perpetual GMT-Master““Oyster-Perpetual” “GMT-Master””
Reference1675“Reference 1675 (dated III.72)”
MovementCaliber 1570“Caliber 1570”
Case Number3 266 971“Case No. 3 266 971”
Movement NumberD 420 324“Movement No. D 420 324”
BraceletRolex U.S.A. riveted “Osyter” bracelet“Rolex U.S.A. riveted “Osyter” bracelet with deployant clasp (7-72)”
Diameter39.5 mm“Diameter 39.5 mm.”

Visible details

  • Blue and red 24-hour bidirectional bezel
  • Riveted link Oyster bracelet
  • Luminous indices on black dial
  • Cyclops lens over date aperture

Research qualifications

  • Oxidation mentioned on the dial and case by the auction description
  • Authenticity of all components is reported by the auction description rather than verified

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

Consulted source

Rolex - Ref. 1675, date, AM-PM indication, two-time zone, black dial with “long E”; “GMT-Master”; stainless steel

Reviewed 2026-10-26 · Record 7f5a4eea4c

Terms in this record

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