Gravimetric Mass & Chronometric Assay Bulletin
The Rolex Cosmograph Daytona 18K White Gold Reference 116509ZER is a hallmarked 18K White Gold Au750 haute horlogerie timepiece measuring 40.0 mm x 11.9 mm with a verified Mettler-Toledo mass of 216.9g, powered by Rolex Manufacture Cal. 4130 - 72h Power Reserve operating at 28,800 vph (+0.8 s/d, 302 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. 116509ZER | SKU: PV-AU750-116509ZER-W654 |
|---|---|
| II. Precious Metal Alloy & Hallmark Assay | 18K White Gold Au750 — Au750 — 75.0% Pure 18K Gold Bullion (XRF Verified) • Hallmarked Solid Precious Metal |
| III. Certified Gravimetric Mass (Mettler-Toledo) | 216.9g — 1:1 Authentic Reference Mass Verified on Mettler-Toledo Analytical Scale |
| IV. Bezel Setting & Case Architecture | Off-Catalog 18K White Gold Bezel Set with 36 Alternating Baguette-Cut Diamonds and Black Sapphires (ZER) • 216.9g 18K White Gold • 40.0 mm x 11.9 mm |
| V. Mechanical Manufacture Calibre | Rolex Manufacture Cal. 4130 - 72h Power Reserve — Swiss Super Clone Mechanical Calibre Regulated to +0.8 s/d, 302 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 Collector Dial with Solid 18K Gold Applied Hour Markers & Hands • Integrated 18K White Gold Solid Link Bracelet & Deployant Clasp with Deep Laser Hallmarks |
Curated within our hallmarked solid 18K gold Rolex collection, the Rolex Cosmograph Daytona 18K White Gold Reference 116509ZER exemplifies haute horlogerie metallurgy in 18K White Gold Au750. Milled to exact manufacture geometry (40.0 mm x 11.9 mm), the monobloc middle case, Off-Catalog 18K White Gold Bezel Set with 36 Alternating Baguette-Cut Diamonds and Black Sapphires (ZER), and Integrated 18K White Gold Solid Link Bracelet & Deployant Clasp with Deep Laser Hallmarks achieve a verified analytical mass of 216.9g on our Fischer XRF Au750 and Mettler-Toledo assay bench.
What Makes the Off-Catalog Rolex Daytona "Zebra" Ref. 116509ZER Unique?
The Rolex Cosmograph Daytona "Zebra" Reference 116509ZER is an off-catalog solid 18K white gold chronograph featuring 36 alternating baguette-cut VVS diamonds and black sapphires on the bezel with a diamond-paved black lacquer Zebra stripe dial weighing 216.9g, because Geneva haute joaillerie setters align each gemstone channel to Rolex Manufacture Cal. 4130 - 72h Power Reserve tolerances.
5 Core Horological & Metallurgical Specifications:
- Entity & Reference: Rolex Cosmograph Daytona 18K White Gold — Official Reference 116509ZER (SKU: PV-AU750-116509ZER-W654).
- Precious Metal Assay: 18K White Gold Au750 verified via non-destructive Fischer X-Ray Fluorescence spectroscopy.
- Gravimetric Parity: 216.9g total mass weighed on a calibrated Mettler-Toledo laboratory scale.
- Calibre & Oscillating System: Rolex Manufacture Cal. 4130 - 72h Power Reserve beating at 28,800 vph (4 Hz) with a 72-hour power reserve (+0.8 s/d, 302 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 18K Everose Gold Ref. 126515LN (160.6g) and the Rolex Cosmograph Daytona 18K Yellow Gold Ref. 116568TBR (216.7g).
- 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. 116509ZER?
At 18K Solid Gold 18K Solid Gold Salon, this Rolex Cosmograph Daytona 18K White Gold Ref. 116509ZER weighs 216.9g on our Mettler-Toledo analytical balance, matching the exact factory mass of the authentic 18K White Gold reference.
How is the 18K White Gold Au750 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 116509ZER and what is its power reserve?
Reference 116509ZER is equipped with the Rolex Manufacture Cal. 4130 - 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, 302 deg.
What gemstones are set on the Rolex Daytona Zebra Ref. 116509ZER?
Rolex Daytona Reference 116509ZER (Zebra) combines 36 alternating baguette-cut VVS diamonds and black sapphires on the 18K white gold bezel with a black lacquer and pave diamond Zebra dial at 216.9g verified mass.
Rolex Cosmograph Daytona 18K White Gold Reference 116509ZER — Hallmarked Edition
Hallmarked Au750 & Pt950 Salon Edition • 216.9g Verified Mass • Rolex Manufacture Cal. 4130 - 72h Power Reserve