5-Axis CNC & Horological Architecture
The Custom Rolex Submariner Date Chronometer Regulated Spec Reference 126613LB is a 5-axis Swiss CNC commission machined in 18K Gold & 904L Oystersteel Rolesor (40.8 mm x 12.3 mm) weighing 174.6g on our Mettler-Toledo analytical balance, driven by Rolex Manufacture Cal. 3235 - 70h Power Reserve regulated to +0.4 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 Submariner Date | Ref. 126613LB | SKU: AT-CNC-126613LB-W520 |
|---|---|
| 02 / 5-Axis CNC Metallurgy & Gold Purity | 18K Gold & 904L Oystersteel Rolesor — 5-Axis Swiss CNC Precision Architecture • 1:1 Authentic Reference Mass • Bespoke Collector Commission |
| 03 / Analytical Bench Weight (1:1 Reference Mass) | 174.6g — 1:1 Authentic Reference Mass Verified on Mettler-Toledo Analytical Scale |
| 04 / Custom Bezel, Gem-Setting & Case Geometry | Unidirectional Royal Blue Cerachrom Ceramic Bezel with Custom 18K Rolesor Graduations & Sapphire Crystal • 174.6g 18K Gold Rolesor • 40.8 mm x 12.3 mm |
| 05 / Regulated Super Clone Movement Calibre | Rolex Manufacture Cal. 3235 - 70h Power Reserve — Swiss Super Clone Mechanical Calibre Regulated to +0.4 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 • 300m / 1,000 ft - Triplock Screw-Down |
| 08 / Bespoke Dial & Integrated Bracelet Spec | 40.8 mm x 12.3 mm • Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands • Hand-Brushed & Chamfered Integrated Solid Link Bracelet & Deployant Clasp |
Engineered inside our Geneva 5-axis CNC Rolex custom atelier, the Custom Rolex Submariner Date Chronometer Regulated Spec Reference 126613LB is machined from solid 18K Gold & 904L Oystersteel Rolesor billets to micron-level tolerances (40.8 mm x 12.3 mm). Every bevel, lug chamfer, and Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands is hand-finished on our watchmaker bench, yielding a certified reference weight of 174.6g verified under our Fischer XRF and Mettler-Toledo QC protocol.
What Are the Horological & Metallurgical Benchmarks of Rolex Submariner Ref. 126613LB?
The Rolex Submariner Reference 126613LB is a precision-engineered luxury timepiece crafted in 18K Gold & 904L Oystersteel Rolesor (40.8 mm x 12.3 mm) with Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands, Unidirectional Royal Blue Cerachrom Ceramic Bezel with Custom 18K Rolesor Graduations & Sapphire Crystal, and a verified Mettler-Toledo mass of 174.6g, because the Rolex Manufacture Cal. 3235 - 70h Power Reserve movement is regulated across six positions to chronometric tolerances with a 72-hour power reserve.
5 Core CNC & Chronometric Specifications:
- Blueprint Reference: Custom Rolex Submariner Date Chronometer Regulated Spec — Official Ref. 126613LB (SKU: AT-CNC-126613LB-W520).
- 5-Axis CNC Metallurgy: 18K Gold & 904L Oystersteel Rolesor case (40.8 mm x 12.3 mm) and Unidirectional Royal Blue Cerachrom Ceramic Bezel with Custom 18K Rolesor Graduations & Sapphire Crystal with hand-polished chamfers.
- Verified Bench Mass: 174.6g confirmed on a Mettler-Toledo analytical gram scale prior to dispatch.
- Super Clone Calibre: Rolex Manufacture Cal. 3235 - 70h Power Reserve operating at 28,800 vph (4 Hz) with 72-hour power reserve and +0.4 s/d, 303 deg accuracy.
- Sapphire Optics & Sizing: Double anti-reflective sapphire crystal, 300m / 1,000 ft - Triplock Screw-Down sealing, and 19 wrist sizing options (14.0–22.0 cm).
Within the Rolex Submariner horological sub-silo, collectors also compare the Rolex Submariner Date Hulk Sunburst Green Dial Ref. 116610LV (156.7g) and the Rolex Submariner Date 41mm Custom Purple Ombre Dial Ref. 126610LN (156.7g).
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- Metallurgical & 4K QC Verification: Fischer XRF Au750 Protocol • 3-Year Mechanical Warranty • Insured Armored Delivery
How is the 18K Gold Rolesor case of this Rolex 126613LB machined?
Our Geneva CNC specialists mill the monobloc middle case, bezel, and bracelet geometry on 5-axis Swiss machining centers in 18K Gold & 904L Oystersteel Rolesor to achieve the authentic 174.6g 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. 3235 - 70h Power Reserve tested on the atelier workbench?
We record a personalized 4K bench video showing the Rolex Manufacture Cal. 3235 - 70h Power Reserve (28,800 vph, 72-hour reserve) running at +0.4 s/d, 303 deg on our Witschi Chronoscope alongside Fischer XRF and Mettler-Toledo gram scale verification.
What dial and bezel specifications distinguish Rolex Submariner Ref. 126613LB?
Reference 126613LB combines Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands and Unidirectional Royal Blue Cerachrom Ceramic Bezel with Custom 18K Rolesor Graduations & Sapphire Crystal within a 40.8 mm x 12.3 mm 18K Gold & 904L Oystersteel Rolesor case weighing 174.6g, verified via Fischer XRF spectroscopy and powered by Rolex Manufacture Cal. 3235 - 70h Power Reserve.
Custom Rolex Submariner Date Chronometer Regulated Spec Ref. 126613LB
5-Axis Swiss CNC 18K Gold & 904L Oystersteel Rolesor • 174.6g Verified Mass • Regulated Rolex Manufacture Cal. 3235 - 70h Power Reserve