5-Axis CNC Metallurgy & Mettler-Toledo Gravimetric Verification
The Rolex GMT-Master II Guinness / Zombie Grey & Black Cerachrom Reference 126713GRNR is a Monte-Carlo registered luxury timepiece crafted in 904L Stainless Steel Custom Architecture (40.0 mm x 11.9 mm) with a verified Mettler-Toledo analytical weight of 172.1g, powered by Rolex Manufacture Cal. 3285 - 70h Power Reserve beating at 28,800 vph (+0.8 s/d, 300 deg) with a 72-hour power reserve, double anti-reflective sapphire crystal, and 100m / 330 ft - Triplock Screw-Down water resistance.
| Entity, Maison & Official Reference | Rolex — Oyster Perpetual GMT-Master II | Ref. 126713GRNR | SKU: MC-CUST-126713GRNR-W139 |
|---|---|
| Precious Metal Alloy & XRF Purity | 904L Stainless Steel Custom Architecture — 5-Axis Swiss CNC Precision Architecture • 1:1 Authentic Reference Mass • Bespoke Collector Commission |
| Verified Total Mass (Mettler-Toledo Scale) | 172.1g — 1:1 Authentic Reference Mass Verified on Mettler-Toledo Analytical Scale |
| Bezel Architecture & Gem-Setting Spec | Precision Brushed & Polished 18K Rolesor Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal • 172.1g 904L Steel Edition • 40.0 mm x 11.9 mm |
| Swiss Super Clone Movement Calibre | Rolex Manufacture Cal. 3285 - 70h Power Reserve — Swiss Super Clone Mechanical Calibre Regulated to +0.8 s/d, 300 deg |
| Power Reserve & Oscillation Frequency | 72-Hour Power Reserve • 28,800 vph (4 Hz) Free-Sprung Balance Wheel |
| Double AR Sapphire Crystal & Water Resistance | Scratch-Resistant Sapphire Crystal with Double Anti-Reflective Coating • 100m / 330 ft - Triplock Screw-Down |
| Dial Finishing & Hallmarked Bracelet Clasp | 40.0 mm x 11.9 mm • Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands • Hand-Brushed & Chamfered Integrated Solid Link Bracelet & Deployant Clasp |
Recorded in our Monte-Carlo solid 18K gold Rolex register, the Rolex GMT-Master II Guinness / Zombie Grey & Black Cerachrom Reference 126713GRNR unites authentic Geneva proportions (40.0 mm x 11.9 mm) with a certified 904L Stainless Steel Custom Architecture mass of 172.1g. Every detail of the Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands, Precision Brushed & Polished 18K Rolesor Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal, and hallmarked clasp is verified under our Fischer XRF Au750 and Mettler-Toledo laboratory protocol.
5 Core Horological & Metallurgical Specifications:
- Registered Entity & Ref: Rolex GMT-Master II Guinness / Zombie Grey & Black Cerachrom — Official Reference 126713GRNR (SKU: MC-CUST-126713GRNR-W139).
- Precious Metal Alloy: 904L Stainless Steel Custom Architecture with deep mechanical hallmarking and 5-axis Swiss CNC case finishing.
- Verified Reference Mass: 172.1g confirmed on our Monte-Carlo showroom Mettler-Toledo analytical balance.
- Mechanical Calibre: Rolex Manufacture Cal. 3285 - 70h Power Reserve operating at 28,800 vph (4 Hz) with 72-hour power reserve (+0.8 s/d, 300 deg).
- Sapphire Crystal & QC: Scratch-resistant sapphire crystal with double anti-reflective coating and 100m / 330 ft - Triplock Screw-Down water resistance.
Within the same Rolex horological silo, collectors also compare the Rolex Submariner Date Ref. 126613LB (174.9g) and the Rolex Cosmograph Daytona John Mayer Emerald Green Dial 18K Yellow Gold Ref. 116508 (216.5g).
What is the verified authentic weight of this Rolex Ref. 126713GRNR?
This Rolex GMT-Master II Guinness / Zombie Grey & Black Cerachrom Ref. 126713GRNR weighs 172.1g in 904L Stainless Steel Custom Architecture, matching the exact authentic factory weight on our Monte-Carlo showroom Mettler-Toledo analytical balance.
Are all 9 showroom photographs of Reference 126713GRNR unedited studio shots?
Yes. All 9 gallery plates show the actual timepiece captured across multiple studio angles on our quality-control bench with zero stock renders.
Which movement powers Reference 126713GRNR and how do I request the 4K QC video?
Reference 126713GRNR is powered by the Rolex Manufacture Cal. 3285 - 70h Power Reserve (28,800 vph, 72-hour power reserve, regulated to +0.8 s/d, 300 deg). Message our Monte-Carlo Private Client Concierge on WhatsApp (+1 305 724 0661) for your personalized 4K video dossier.
Rolex GMT-Master II Guinness / Zombie Grey & Black Cerachrom Ref. 126713GRNR
Monte-Carlo Reference Register • 172.1g 904L Stainless Steel Custom Architecture • Rolex Manufacture Cal. 3285 - 70h Power Reserve