Rolex
Rolex GMT-Master — Ref. 1675
Rolex GMT-Master — Ref. 1675
Complete Guide & Authentication Service
The Rolex GMT-Master 1675 is one of the most beloved vintage sports watches: 40 mm steel case, iconic red/blue “Pepsi” bezel, gilt or matte dials, and the extra GMT hand for dual-time travel. Below is a detailed guide with authentication checklist, serial ranges, dial/bracelet variants and red flags — plus an easy way to order your preliminary certificate with QR verification.
24h
Delivery
€39
Starting Price
QR
Verification
Independent
Service
Model Overview
Why the GMT-Master 1675 Matters
Introduced in 1959 and produced until 1980, the 1675 cemented the GMT-Master as the ultimate tool for pilots and travelers. It featured a 40 mm steel case with pointed or later rounded crown guards, the red/blue “Pepsi” insert, and early gilt gloss or later matte dials. Powered by the Cal. 1565 and 1575, it’s a cornerstone of Rolex sports collecting. Authentication requires checking dial era, bezel insert type, handsets, and bracelet codes.
Simple Process
Authenticate Your 1675 in 3 Steps
1. Upload
Photos of dial, case, bezel insert, movement, bracelet codes.
2. Review
We check gilt vs matte dial period, crown guards, insert colors, and serial consistency.
3. Certificate
Receive a PDF with ID + QR for verification during deals.
Deep Dive
Authentication Checklist — GMT-Master 1675
Case & Bezel
- 40 mm steel Oyster case.
- Early pointed crown guards (“PCG”) until ~1964.
- Aluminum red/blue “Pepsi” bezel insert, aging varies.
- Caseback engraving must match era.
Movement
- Cal. 1565 (early) then Cal. 1575 (late).
- Hacking feature from ~1971 onward.
- Movement bridge markings must align with period.
Dial & Hands
- Gilt gloss dials with chapter ring (1959–mid 60s).
- Matte dials with white text (late 60s–80).
- Correct small 24h hand early, larger red hand later.
- Tritium lume: “Swiss – T < 25”.
Bracelet & Clasp
- Rivet Oyster 7206 early, folded 7836 later.
- End links: 80 / 280 / 580 depending on period.
- Clasp codes match year range.
Dating the Watch
Indicative Serial Windows
| Serial Range | Approx. Year | Notes |
|---|---|---|
| 500k – 1.2M | 1959–64 | Gilt dials, pointed crown guards. |
| 1.3M – 2.5M | 1965–69 | Matte dials begin, red small hand. |
| 2.6M – 4.0M | 1970–75 | Matte “Mark” dial variants expand. |
| 4.1M – 5.9M | 1976–80 | Late dials, hacking movements. |
Risks
Common 1675 Red Flags
Service Inserts
Bright modern Pepsi inserts instead of faded originals.
Incorrect Hands
Modern red GMT hands mismatched to early gilt dials.
Fake Dials
Overly fresh lume plots, wrong coronet shape.
Questions
Rolex GMT-Master 1675 — FAQ
Do you cover gilt vs matte dials?
Yes, we check fonts, coronet shape, and correct era features.
Can you confirm original bezel inserts?
Yes, we differentiate period-correct faded inserts from service ones.
Do you check bracelet types?
Yes, Oyster rivet, folded or solid bracelets are cross-checked with serial ranges.
How fast can I get a certificate?
Standard 24h delivery, with urgent options when available.
Ready to Verify Your GMT-Master 1675?
Get peace of mind before buying, selling or listing your vintage GMT. A verified certificate strengthens negotiations and protects your investment.