Rolex Oyster Perpetual GMT-Master Ref. 1675

Technical characteristics

Type

Self-winding GMT wristwatch

Maker

Rolex

Model

Oyster-Perpetual GMT-Master

Bracelet

Rolex U.S.A. riveted “Osyter” bracelet

Diameter

39.5 mm

Movement

Caliber 1570

Reference

1675

Case Number

3 266 971

Place recorded

Switzerland

Movement Number

D 420 324

Maker / attribution

Rolex

Design

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.

Visible features

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

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.

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.

Identification

Reference

1675

Serial number

3 266 971

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.