Rolex
Rolex GMT-Master — Ref. 1675
Rolex GMT-Master — Ref. 1675
Complete Guide & Authentication Service
The Rolex GMT-Master 1675 (1959–1980) became the ultimate travel companion during the Jet Age, featuring the iconic red-blue “Pepsi” bezel, 24-hour GMT hand and 40 mm Oyster case. Below you’ll find a long-form guide with authentication checklist, serial ranges, dial/bracelet variants and common 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
Produced for over 20 years, the 1675 introduced crown guards to the GMT line, expanded dial styles (gilt → matte → radial), and became an aviation icon. Collectors prize its Pepsi inserts, pointed crown guards (early “PCG”), gilt chapter ring dials, and rare small hand variations. Authentication hinges on coherency across case engravings, dial print era, bezel font, bracelet codes, and movement caliber 1565/1575 (with hacking after ~1972).
Simple Process
Authenticate Your 1675 in 3 Steps
We combine AI flagging with expert review to deliver a fast, reliable preliminary certificate built for buyers, sellers and collectors.
1. Upload
Photos of dial, bezel, serial/lug, caseback, movement and bracelet.
2. Review
We check gilt vs matte dial, insert font, case guards, movement engravings.
3. Certificate
PDF with unique ID + QR for instant online verification — trusted worldwide.
Deep Dive
Authentication Checklist — GMT-Master 1675
Key points to inspect before buying or listing a 1675.
Case & Bezel
- 40 mm steel Oyster case with pointed or rounded crown guards.
- Acrylic crystal; bidirectional bezel with Pepsi insert.
- Insert fonts: fat font → thin font progression; fading is natural.
Movement
- Cal. 1565 (early, non-hacking) → Cal. 1575 (later, hacking after ~1972).
- Bridge engravings and finishing must align with serial era.
Dial & Hands
- Gilt gloss (1959–66), matte meters-first (1967–70s), radial plots (late).
- “Swiss T < 25” tritium marking; lume aging should match hands.
- Hands: Mercedes hour + red 24h hand with small vs large triangle.
Bracelet & Clasp
- 7206 riveted Oyster → 7836 folded → 78360 solid link (late).
- Correct end links (e.g., 280, 580).
Dating the Watch
Indicative Serial Windows (’60s–’70s)
| Serial Range | Approx. Year | Notes |
|---|---|---|
| ~500,000 – 1.3M | 1960–1965 | Early gilt, PCG cases. |
| 1.3M – 2.5M | 1966–1969 | Matte dials appear. |
| 2.5M – 4.0M | 1970–1975 | Feet-first text; 7836 bracelets common. |
| 4.0M – 5.5M | 1976–1980 | Late radial dials; 78360 bracelet. |
Risks
Common 1675 Red Flags
Redial / Reprint
Wrong gilt/matte style for serial, inconsistent fonts.
Fake Inserts
Modern aftermarket Pepsi bezels passed as vintage.
Bracelet Issues
Mismatched end links, wrong clasp code for era.
Questions
Rolex GMT-Master 1675 — FAQ
Can you authenticate Pepsi inserts?
Yes, we check font thickness, fading, and bezel aging consistency.
Do you check pointed crown guards?
Yes, early PCG cases are rare and valuable; we verify shape and wear.
What about bracelets?
We check rivet vs folded vs solid link against serial range and clasp codes.
Is QR certificate accepted by buyers?
Yes — buyers can verify instantly on our site; trusted in listings worldwide.
Ready to Verify Your GMT-Master 1675?
Add a trusted certificate to your watch transaction. It pays for itself in stronger negotiations and peace of mind.