Gravimetric Mass & Chronometric Assay Bulletin
The Rolex Cosmograph Daytona Reference 126502 is a hallmarked 904L Stainless Steel Custom Architecture haute horlogerie timepiece measuring 40.0 mm x 11.9 mm with a verified Mettler-Toledo mass of 143.4g, powered by Rolex Manufacture Cal. 4131 - 72h Power Reserve operating at 28,800 vph (+0.8 s/d, 298 deg) with a 72-hour power reserve, double anti-reflective sapphire crystal, and 100m / 330 ft - Triplock Screw-Down water resistance.
| I. Official Maison Entity & Reference | Rolex — Oyster Perpetual Cosmograph Daytona | Ref. 126502 | SKU: PV-CUST-126502-W254 |
|---|---|
| II. Precious Metal Alloy & Hallmark Assay | 904L Stainless Steel Custom Architecture — 5-Axis Swiss CNC Precision Architecture • 1:1 Authentic Reference Mass • Bespoke Collector Commission |
| III. Certified Gravimetric Mass (Mettler-Toledo) | 143.4g — 1:1 Authentic Reference Mass Verified on Mettler-Toledo Analytical Scale |
| IV. Bezel Setting & Case Architecture | Precision Brushed & Polished CNC Edition Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal • 143.4g 904L Steel Edition • 40.0 mm x 11.9 mm |
| V. Mechanical Manufacture Calibre | Rolex Manufacture Cal. 4131 - 72h Power Reserve — Swiss Super Clone Mechanical Calibre Regulated to +0.8 s/d, 298 deg |
| VI. Power Reserve & Oscillation Frequency | 72-Hour Power Reserve • 28,800 vph (4 Hz) Free-Sprung Balance Wheel |
| VII. Double AR Sapphire Crystal & Hermeticity | Scratch-Resistant Sapphire Crystal with Double Anti-Reflective Coating • 100m / 330 ft - Triplock Screw-Down |
| VIII. Dial Finishing, Bracelet & Hallmarked 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 |
Curated within our hallmarked solid 18K gold Rolex collection, the Rolex Cosmograph Daytona Reference 126502 exemplifies haute horlogerie metallurgy in 904L Stainless Steel Custom Architecture. Milled to exact manufacture geometry (40.0 mm x 11.9 mm), the monobloc middle case, Precision Brushed & Polished CNC Edition Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal, and Hand-Brushed & Chamfered Integrated Solid Link Bracelet & Deployant Clasp achieve a verified analytical mass of 143.4g on our Fischer XRF Au750 and Mettler-Toledo assay bench.
What Are the Horological & Metallurgical Benchmarks of Rolex Cosmograph Daytona Ref. 126502?
The Rolex Cosmograph Daytona Reference 126502 is a precision-engineered luxury timepiece crafted in 904L Stainless Steel Custom Architecture (40.0 mm x 11.9 mm) with Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands, Precision Brushed & Polished CNC Edition Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal, and a verified Mettler-Toledo mass of 143.4g, because its Rolex Manufacture Cal. 4131 - 72h Power Reserve movement is regulated across six positions to chronometric tolerances with a 72-hour power reserve.
5 Core Horological & Metallurgical Specifications:
- Entity & Reference: Rolex Cosmograph Daytona — Official Reference 126502 (SKU: PV-CUST-126502-W254).
- Precious Metal Assay: 904L Stainless Steel Custom Architecture verified via non-destructive Fischer X-Ray Fluorescence spectroscopy.
- Gravimetric Parity: 143.4g total mass weighed on a calibrated Mettler-Toledo laboratory scale.
- Calibre & Oscillating System: Rolex Manufacture Cal. 4131 - 72h Power Reserve beating at 28,800 vph (4 Hz) with a 72-hour power reserve (+0.8 s/d, 298 deg).
- Crystal & Hermeticity: Scratch-resistant sapphire crystal with double anti-reflective coating and 100m / 330 ft - Triplock Screw-Down rating.
Within the Rolex Cosmograph Daytona horological sub-silo, collectors also compare the Rolex Cosmograph Daytona Artisans de Geneve Skeleton Edition Chronometer Regulated Spec Ref. 116500LN (143.5g) and the Rolex Cosmograph Daytona Artisans de Geneve Skeleton Edition Ice-Blue Sunray Dial Ref. 116500LN (143.7g).
- Parent Brand & Cosmograph Daytona Silo Hub: Browse All 289 Certified Rolex Solid 18K Gold & Pt950 Watches
- Technical Research Monograph: Swiss St. Bernard Poincon & Au750 Gold Hallmarks Guide (All 5 Journal Monographs)
- Homepage Master Register: Return to 18K SOLID GOLD Homepage (Complete 774-Watch Solid 18K Gold & Pt950 Register)
- All-Brands Catalogue: Explore Complete 12-Maison Horological Catalogue (/shop/)
- Metallurgical & Escrow Verification: Fischer XRF Au750 Protocol • 3-Year Mechanical Warranty • Insured Armored Delivery
What is the verified authentic gram weight of this Rolex Ref. 126502?
At 18K Solid Gold 18K Solid Gold Salon, this Rolex Cosmograph Daytona Ref. 126502 weighs 143.4g on our Mettler-Toledo analytical balance, matching the exact factory mass of the authentic 904L Steel Edition reference.
How is the 904L Stainless Steel Custom Architecture purity verified prior to dispatch?
Every timepiece undergoes non-destructive Fischer X-Ray Fluorescence (XRF) spectroscopy confirming elemental bullion composition alongside a personalized 4K scale and hallmark inspection video.
Which movement powers Reference 126502 and what is its power reserve?
Reference 126502 is equipped with the Rolex Manufacture Cal. 4131 - 72h Power Reserve operating at 28,800 vph (4 Hz) with a 72-hour power reserve, regulated in our Paris and Geneva workshop to +0.8 s/d, 298 deg.
What dial and bezel specifications distinguish Rolex Cosmograph Daytona Ref. 126502?
Reference 126502 combines Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands and Precision Brushed & Polished CNC Edition Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal within a 40.0 mm x 11.9 mm 904L Stainless Steel Custom Architecture case weighing 143.4g, verified via Fischer XRF spectroscopy and powered by Rolex Manufacture Cal. 4131 - 72h Power Reserve.
Rolex Cosmograph Daytona Reference 126502 — Salon Edition
Bespoke Atelier Salon Edition • 143.4g Verified Mass • Rolex Manufacture Cal. 4131 - 72h Power Reserve