Fischer XRF Au750 (75.0%) & Mettler-Toledo Gravimetric Verification
The Rolex Day-Date 40 Ice-Blue Sunray Dial 950 Platinum Reference 228206 is a direct Swiss foundry specimen engineered in 950 Platinum Pt950 (40.0 mm x 11.5 mm) with a certified Mettler-Toledo mass of 286.0g, Fischer XRF Au750 metallurgical verification, and Rolex Manufacture Cal. 3255 - 70h Power Reserve running at 28,800 vph (+0.6 s/d, 302 deg) with a 72-hour power reserve and 100m / 330 ft - Twinlock Screw-Down rating.
Catalogued in our direct Swiss foundry Rolex assay archive under Specimen Code LAB-XRF-228206-W717, this Rolex Day-Date 40 Ice-Blue Sunray Dial 950 Platinum Reference 228206 is smelted and CNC-machined in 950 Platinum Pt950 (40.0 mm x 11.5 mm). Prior to archival release, the completed assembly is weighed on a calibrated Mettler-Toledo balance at 286.0g and scanned via non-destructive Fischer XRF spectroscopy.
What Are the Horological & Metallurgical Benchmarks of Rolex Day-Date President Ref. 228206?
The Rolex Day-Date President Reference 228206 is a precision-engineered luxury timepiece crafted in 950 Platinum Pt950 (40.0 mm x 11.5 mm) with Signature Platinum Ice-Blue Sunray Dial with Solid 18K Gold Applied Hour Markers & Hands, Hand-Finished 950 Platinum Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal, and a verified Mettler-Toledo mass of 286.0g, because its Rolex Manufacture Cal. 3255 - 70h Power Reserve movement is regulated across six positions to chronometric tolerances with a 72-hour power reserve.
5 Core Foundry & Laboratory Assay Specifications:
- Foundry Specimen Entity: Rolex Day-Date 40 Ice-Blue Sunray Dial 950 Platinum — Official Ref. 228206 (Specimen LAB-XRF-228206-W717).
- XRF Metallurgical Assay: 950 Platinum Pt950 certified for elemental composition and hallmark integrity.
- Mettler-Toledo Mass: 286.0g verified gravimetric parity matching the authentic manufacture reference.
- Chronometric Calibre: Rolex Manufacture Cal. 3255 - 70h Power Reserve beating at 28,800 vph (4 Hz) with 72-hour reserve and +0.6 s/d, 302 deg Witschi trace.
- Optical & Pressure Testing: Double anti-reflective sapphire crystal, Signature Platinum Ice-Blue Sunray Dial with Solid 18K Gold Applied Hour Markers & Hands, and 100m / 330 ft - Twinlock Screw-Down barometric sealing.
Within the Rolex Day-Date President horological sub-silo, collectors also compare the Rolex Day-Date 36 Iridescent Natural Mother-of-Pearl Dial 18K Yellow Gold Ref. 128238 (183.4g) and the Rolex Day-Date 40 950 Platinum Geneva Atelier Spec Ref. 228236 (280.1g).
- Parent Brand & Day-Date President Silo Hub: Browse All 289 Certified Rolex Solid 18K Gold & Pt950 Watches
- Technical Research Monograph: Fischer XRF Au750 Spectrometry Watch Authentication SOP-750 (All 5 Journal Monographs)
- Homepage Master Register: Return to 18K FACTORY 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 laboratory instruments certify Reference 228206 (Rolex)?
Every 18K Factory specimen is verified on three calibrated instruments on 4K video: a Mettler-Toledo analytical balance (286.0g), a Fischer XRF spectrometer (950 Platinum Pt950), and a Witschi Chronoscope (+0.6 s/d, 302 deg).
Does the 286.0g reading match the authentic original Rolex 228206 weight?
Yes. Our CNC foundry machines the 950 Platinum case and bracelet to replicate the exact 286.0g reference mass of the authentic manufacture timepiece.
What are the movement specifications for Reference 228206?
Reference 228206 is powered by the Rolex Manufacture Cal. 3255 - 70h Power Reserve operating at 28,800 vph (4 Hz) with a 72-hour power reserve, regulated across six positions to +0.6 s/d, 302 deg.
What dial and bezel specifications distinguish Rolex Day-Date President Ref. 228206?
Reference 228206 combines Signature Platinum Ice-Blue Sunray Dial with Solid 18K Gold Applied Hour Markers & Hands and Hand-Finished 950 Platinum Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal within a 40.0 mm x 11.5 mm 950 Platinum Pt950 case weighing 286.0g, verified via Fischer XRF spectroscopy and powered by Rolex Manufacture Cal. 3255 - 70h Power Reserve.
Rolex Day-Date 40 Ice-Blue Sunray Dial 950 Platinum Ref. 228206 — XRF Certified Edition
Fischer XRF Verified 950 Platinum Pt950 • Mettler-Toledo 286.0g • Rolex Manufacture Cal. 3255 - 70h Power Reserve
| Assay Specimen ID & Official Reference | Rolex — Oyster Perpetual Day-Date 40 | Ref. 228206 | SKU: LAB-XRF-228206-W717 |
|---|---|
| Fischer XRF Elemental Purity & Alloy | 950 Platinum Pt950 — Pt950 — 95.0% Pure Platinum Bullion (XRF Verified) • Hallmarked Solid Precious Metal |
| Mettler-Toledo Gravimetric Mass (g) | 286.0g — 1:1 Authentic Reference Mass Verified on Mettler-Toledo Analytical Scale |
| Bezel Tolerance, Gem-Setting & Case Dimension | Hand-Finished 950 Platinum Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal • 286.0g 950 Platinum • 40.0 mm x 11.5 mm |
| Calibre Reference & Witschi Chronometry | Rolex Manufacture Cal. 3255 - 70h Power Reserve — Swiss Super Clone Mechanical Calibre Regulated to +0.6 s/d, 302 deg |
| Isochronism Frequency & Autonomous Power Reserve | 72-Hour Power Reserve • 28,800 vph (4 Hz) Free-Sprung Balance Wheel |
| Double AR Sapphire Crystal & Barometric Rating | Scratch-Resistant Sapphire Crystal with Double Anti-Reflective Coating • 100m / 330 ft - Twinlock Screw-Down |
| Dial Metallurgy & Clasp Hallmark Verification | 40.0 mm x 11.5 mm • Signature Platinum Ice-Blue Sunray Dial with Solid 18K Gold Applied Hour Markers & Hands • Integrated 950 Platinum Solid Link Bracelet & Deployant Clasp with Deep Laser Hallmarks |