5-Axis CNC & Horological Architecture
The Custom Rolex Day-Date 40 Diamond-Set Bezel 950 Platinum Reference 228396TBR is a 5-axis Swiss CNC commission machined in 950 Platinum Pt950 (40.0 mm x 11.5 mm) weighing 280.6g on our Mettler-Toledo analytical balance, driven by Rolex Manufacture Cal. 3255 - 70h Power Reserve regulated to +0.7 s/d, 303 deg at 28,800 vph with a 72-hour power reserve beneath a double anti-reflective sapphire crystal.
| 01 / CNC Blueprint Entity & Reference | Rolex — Oyster Perpetual Day-Date 40 | Ref. 228396TBR | SKU: AT-AU750-228396TBR-W88 |
|---|---|
| 02 / 5-Axis CNC Metallurgy & Gold Purity | 950 Platinum Pt950 — Pt950 — 95.0% Pure Platinum Bullion (XRF Verified) • Hallmarked Solid Precious Metal |
| 03 / Analytical Bench Weight (1:1 Reference Mass) | 280.6g — 1:1 Authentic Reference Mass Verified on Mettler-Toledo Analytical Scale |
| 04 / Custom Bezel, Gem-Setting & Case Geometry | Off-Catalog 950 Platinum Pt950 Bezel Set with 36 Trapeze-Cut Baguette VVS Diamonds (TBR — Taille Baguette Diamants) • 280.6g 950 Platinum • 40.0 mm x 11.5 mm |
| 05 / Regulated Super Clone Movement Calibre | Rolex Manufacture Cal. 3255 - 70h Power Reserve — Swiss Super Clone Mechanical Calibre Regulated to +0.7 s/d, 303 deg |
| 06 / Barrel Power Reserve & Balance Frequency | 72-Hour Power Reserve • 28,800 vph (4 Hz) Free-Sprung Balance Wheel |
| 07 / Optical Sapphire Crystal (Double AR) & Sealing | Scratch-Resistant Sapphire Crystal with Double Anti-Reflective Coating • 100m / 330 ft - Twinlock Screw-Down |
| 08 / Bespoke Dial & Integrated Bracelet Spec | 40.0 mm x 11.5 mm • Diamond-Set Bezel with Solid 18K Gold Applied Hour Markers & Hands • Integrated 950 Platinum Solid Link Bracelet & Deployant Clasp with Deep Laser Hallmarks |
Engineered inside our Geneva 5-axis CNC Rolex custom atelier, the Custom Rolex Day-Date 40 Diamond-Set Bezel 950 Platinum Reference 228396TBR is machined from solid 950 Platinum Pt950 billets to micron-level tolerances (40.0 mm x 11.5 mm). Every bevel, lug chamfer, and Diamond-Set Bezel with Solid 18K Gold Applied Hour Markers & Hands is hand-finished on our watchmaker bench, yielding a certified reference weight of 280.6g verified under our Fischer XRF and Mettler-Toledo QC protocol.
What Does the TBR Baguette Diamond Designation Mean on Rolex Ref. 228396TBR?
The Rolex Day-Date President Reference 228396TBR is an off-catalog high-jewelry timepiece in 950 Platinum Pt950 equipped with 36 trapeze-cut baguette VVS diamonds on the bezel (TBR — Taille Baguette Diamants) and a verified mass of 280.6g, because off-catalog TBR allocations replace the standard tachymeter or fluted bezel with hand-matched baguette diamond channels.
5 Core CNC & Chronometric Specifications:
- Blueprint Reference: Custom Rolex Day-Date 40 Diamond-Set Bezel 950 Platinum — Official Ref. 228396TBR (SKU: AT-AU750-228396TBR-W88).
- 5-Axis CNC Metallurgy: 950 Platinum Pt950 case (40.0 mm x 11.5 mm) and Off-Catalog 950 Platinum Pt950 Bezel Set with 36 Trapeze-Cut Baguette VVS Diamonds (TBR — Taille Baguette Diamants) with hand-polished chamfers.
- Verified Bench Mass: 280.6g confirmed on a Mettler-Toledo analytical gram scale prior to dispatch.
- Super Clone Calibre: Rolex Manufacture Cal. 3255 - 70h Power Reserve operating at 28,800 vph (4 Hz) with 72-hour power reserve and +0.7 s/d, 303 deg accuracy.
- Sapphire Optics & Sizing: Double anti-reflective sapphire crystal, 100m / 330 ft - Twinlock Screw-Down sealing, and 19 wrist sizing options (14.0–22.0 cm).
Within the Rolex Day-Date President horological sub-silo, collectors also compare the Rolex Day-Date 40 Olive Green Sunray Dial 18K Everose Gold Ref. 228235 (210.4g) and the Rolex Day-Date 36 Graduated Green Ombre Sunray Dial 18K Yellow Gold Ref. 128238 (183.4g).
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- Metallurgical & 4K QC Verification: Fischer XRF Au750 Protocol • 3-Year Mechanical Warranty • Insured Armored Delivery
How is the 950 Platinum case of this Rolex 228396TBR machined?
Our Geneva CNC specialists mill the monobloc middle case, bezel, and bracelet geometry on 5-axis Swiss machining centers in 950 Platinum Pt950 to achieve the authentic 280.6g reference mass.
Can the bracelet or strap be pre-sized to my exact wrist circumference?
Yes. Choose from 19 precision wrist circumference options (14.0 cm to 22.0 cm, or full unsized factory length). All removed solid links are sealed inside your presentation box.
How is the Rolex Manufacture Cal. 3255 - 70h Power Reserve tested on the atelier workbench?
We record a personalized 4K bench video showing the Rolex Manufacture Cal. 3255 - 70h Power Reserve (28,800 vph, 72-hour reserve) running at +0.7 s/d, 303 deg on our Witschi Chronoscope alongside Fischer XRF and Mettler-Toledo gram scale verification.
What does the TBR suffix mean on Rolex Day-Date President Ref. 228396TBR?
The TBR horological suffix designates Taille Baguette Diamants: 36 precision-cut baguette VVS diamonds channel-set into the 950 Platinum Pt950 bezel of this 280.6g off-catalog Rolex Reference 228396TBR.
Custom Rolex Day-Date 40 Diamond-Set Bezel 950 Platinum Ref. 228396TBR
5-Axis Swiss CNC 950 Platinum Pt950 • 280.6g Verified Mass • Regulated Rolex Manufacture Cal. 3255 - 70h Power Reserve