Fischer XRF Au750 (75.0%) & Mettler-Toledo Gravimetric Verification
The Rolex GMT-Master II Batman Blue & Black Oyster Reference 126710BLNR is a direct Swiss foundry specimen engineered in 904L Stainless Steel Custom Architecture (40.0 mm x 11.9 mm) with a certified Mettler-Toledo mass of 143.7g, Fischer XRF Au750 metallurgical verification, and Rolex Manufacture Cal. 3285 - 70h Power Reserve running at 28,800 vph (+0.8 s/d, 302 deg) with a 72-hour power reserve and 100m / 330 ft - Triplock Screw-Down rating.
Catalogued in our direct Swiss foundry Rolex assay archive under Specimen Code LAB-CNC-126710BLNR-W744, this Rolex GMT-Master II Batman Blue & Black Oyster Reference 126710BLNR is smelted and CNC-machined in 904L Stainless Steel Custom Architecture (40.0 mm x 11.9 mm). Prior to archival release, the completed assembly is weighed on a calibrated Mettler-Toledo balance at 143.7g and scanned via non-destructive Fischer XRF spectroscopy.
What Are the Horological & Metallurgical Benchmarks of Rolex GMT-Master II Ref. 126710BLNR?
The Rolex GMT-Master II Reference 126710BLNR 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, Bidirectional 24-Hour Blue & Black Batman Cerachrom Ceramic Bezel, and a verified Mettler-Toledo mass of 143.7g, because its Rolex Manufacture Cal. 3285 - 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 GMT-Master II Batman Blue & Black Oyster — Official Ref. 126710BLNR (Specimen LAB-CNC-126710BLNR-W744).
- XRF Metallurgical Assay: 904L Stainless Steel Custom Architecture certified for elemental composition and hallmark integrity.
- Mettler-Toledo Mass: 143.7g verified gravimetric parity matching the authentic manufacture reference.
- Chronometric Calibre: Rolex Manufacture Cal. 3285 - 70h Power Reserve beating at 28,800 vph (4 Hz) with 72-hour reserve and +0.8 s/d, 302 deg Witschi trace.
- Optical & Pressure Testing: Double anti-reflective sapphire crystal, Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands, and 100m / 330 ft - Triplock Screw-Down barometric sealing.
Within the Rolex GMT-Master II horological sub-silo, collectors also compare the Rolex GMT-Master II Guinness / Zombie Grey & Black Cerachrom Ref. 126713GRNR (172.1g) and the Rolex GMT-Master Vintage Geneva Atelier Spec Ref. 6542 (114.4g).
- Parent Brand & GMT-Master II 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 126710BLNR (Rolex)?
Every 18K Factory specimen is verified on three calibrated instruments on 4K video: a Mettler-Toledo analytical balance (143.7g), a Fischer XRF spectrometer (904L Stainless Steel Custom Architecture), and a Witschi Chronoscope (+0.8 s/d, 302 deg).
Does the 143.7g reading match the authentic original Rolex 126710BLNR weight?
Yes. Our CNC foundry machines the 904L Steel Edition case and bracelet to replicate the exact 143.7g reference mass of the authentic manufacture timepiece.
What are the movement specifications for Reference 126710BLNR?
Reference 126710BLNR is powered by the Rolex Manufacture Cal. 3285 - 70h Power Reserve operating at 28,800 vph (4 Hz) with a 72-hour power reserve, regulated across six positions to +0.8 s/d, 302 deg.
What dial and bezel specifications distinguish Rolex GMT-Master II Ref. 126710BLNR?
Reference 126710BLNR combines Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands and Bidirectional 24-Hour Blue & Black Batman Cerachrom Ceramic Bezel within a 40.0 mm x 11.9 mm 904L Stainless Steel Custom Architecture case weighing 143.7g, verified via Fischer XRF spectroscopy and powered by Rolex Manufacture Cal. 3285 - 70h Power Reserve.
Rolex GMT-Master II Batman Blue & Black Oyster Ref. 126710BLNR — XRF Certified Edition
Fischer XRF Verified 904L Stainless Steel Custom Architecture • Mettler-Toledo 143.7g • Rolex Manufacture Cal. 3285 - 70h Power Reserve
| Assay Specimen ID & Official Reference | Rolex — Oyster Perpetual GMT-Master II | Ref. 126710BLNR | SKU: LAB-CNC-126710BLNR-W744 |
|---|---|
| Fischer XRF Elemental Purity & Alloy | 904L Stainless Steel Custom Architecture — 5-Axis Swiss CNC Precision Architecture • 1:1 Authentic Reference Mass • Bespoke Collector Commission |
| Mettler-Toledo Gravimetric Mass (g) | 143.7g — 1:1 Authentic Reference Mass Verified on Mettler-Toledo Analytical Scale |
| Bezel Tolerance, Gem-Setting & Case Dimension | Bidirectional 24-Hour Blue & Black Batman Cerachrom Ceramic Bezel • 143.7g 904L Steel Edition • 40.0 mm x 11.9 mm |
| Calibre Reference & Witschi Chronometry | Rolex Manufacture Cal. 3285 - 70h Power Reserve — Swiss Super Clone Mechanical Calibre Regulated to +0.8 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 - Triplock Screw-Down |
| Dial Metallurgy & Clasp Hallmark Verification | 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 |