5-Axis CNC & Horological Architecture
The Custom Patek Philippe Aquanaut Luce Annual Calendar 18K Rose Gold Chronometer Regulated Spec Reference 5261R is a 5-axis Swiss CNC commission machined in 18K Rose Gold Au750 (39.9 mm x 10.9 mm) weighing 104.9g on our Mettler-Toledo analytical balance, driven by Patek Philippe Cal. 26-330 S QA LU regulated to +0.4 s/d, 298 deg at 28,800 vph with a 72-hour power reserve beneath a double anti-reflective sapphire crystal.
| 01 / CNC Blueprint Entity & Reference | Patek Philippe — Aquanaut Luce Annual Calendar | Ref. 5261R | SKU: AT-AU750-5261R-W650 |
|---|---|
| 02 / 5-Axis CNC Metallurgy & Gold Purity | 18K Rose Gold Au750 — Au750 — 75.0% Pure 18K Gold Bullion (XRF Verified) • Hallmarked Solid Precious Metal |
| 03 / Analytical Bench Weight (1:1 Reference Mass) | 104.9g — 1:1 Authentic Reference Mass Verified on Mettler-Toledo Analytical Scale |
| 04 / Custom Bezel, Gem-Setting & Case Geometry | Satin-Brushed Rounded Octagonal Bezel with Mirror-Polished Chamfered Bevels with Anti-Reflective Scratch-Resistant Sapphire Crystal • 104.9g 18K Rose Gold • 39.9 mm x 10.9 mm |
| 05 / Regulated Super Clone Movement Calibre | Patek Philippe Cal. 26-330 S QA LU — Swiss Super Clone Mechanical Calibre Regulated to +0.4 s/d, 298 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 • 30m / 3 ATM |
| 08 / Bespoke Dial & Integrated Bracelet Spec | 39.9 mm x 10.9 mm • Hand-Finished Collector Dial with Solid 18K Gold Applied Hour Markers & Hands • Integrated 18K Rose Gold Hand-Stitched Alligator / Elastomer Strap & Solid Gold Folding Clasp with Deep Laser Hallmarks |
Engineered inside our Geneva 5-axis CNC Patek Philippe custom atelier, the Custom Patek Philippe Aquanaut Luce Annual Calendar 18K Rose Gold Chronometer Regulated Spec Reference 5261R is machined from solid 18K Rose Gold Au750 billets to micron-level tolerances (39.9 mm x 10.9 mm). Every bevel, lug chamfer, and Hand-Finished Collector Dial with Solid 18K Gold Applied Hour Markers & Hands is hand-finished on our watchmaker bench, yielding a certified reference weight of 104.9g verified under our Fischer XRF and Mettler-Toledo QC protocol.
What Are the Horological & Metallurgical Benchmarks of Patek Philippe Aquanaut Ref. 5261R?
The Patek Philippe Aquanaut Reference 5261R is a precision-engineered luxury timepiece crafted in 18K Rose Gold Au750 (39.9 mm x 10.9 mm) with Hand-Finished Collector Dial with Solid 18K Gold Applied Hour Markers & Hands, Satin-Brushed Rounded Octagonal Bezel with Mirror-Polished Chamfered Bevels with Anti-Reflective Scratch-Resistant Sapphire Crystal, and a verified Mettler-Toledo mass of 104.9g, because the Patek Philippe Cal. 26-330 S QA LU movement is regulated across six positions to chronometric tolerances with a 72-hour power reserve.
5 Core CNC & Chronometric Specifications:
- Blueprint Reference: Custom Patek Philippe Aquanaut Luce Annual Calendar 18K Rose Gold Chronometer Regulated Spec — Official Ref. 5261R (SKU: AT-AU750-5261R-W650).
- 5-Axis CNC Metallurgy: 18K Rose Gold Au750 case (39.9 mm x 10.9 mm) and Satin-Brushed Rounded Octagonal Bezel with Mirror-Polished Chamfered Bevels with Anti-Reflective Scratch-Resistant Sapphire Crystal with hand-polished chamfers.
- Verified Bench Mass: 104.9g confirmed on a Mettler-Toledo analytical gram scale prior to dispatch.
- Super Clone Calibre: Patek Philippe Cal. 26-330 S QA LU operating at 28,800 vph (4 Hz) with 72-hour power reserve and +0.4 s/d, 298 deg accuracy.
- Sapphire Optics & Sizing: Double anti-reflective sapphire crystal, 30m / 3 ATM sealing, and 19 wrist sizing options (14.0–22.0 cm).
Within the Patek Philippe Aquanaut horological sub-silo, collectors also compare the Patek Philippe Aquanaut 40.8mm Bespoke Forged Carbon Ref. 5167A-001 (64.3g) and the Patek Philippe Aquanaut Extra-Large Self-Winding Diamond-Set Bezel Ref. 5167A (79.6g).
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- Homepage Master Register: Return to 18K CUSTOM Homepage (Complete 774-Watch Solid 18K Gold & Pt950 Register)
- All-Brands Catalogue: Explore Complete 12-Maison Horological Catalogue (/shop/)
- Metallurgical & 4K QC Verification: Fischer XRF Au750 Protocol • 3-Year Mechanical Warranty • Insured Armored Delivery
How is the 18K Rose Gold case of this Patek Philippe 5261R machined?
Our Geneva CNC specialists mill the monobloc middle case, bezel, and bracelet geometry on 5-axis Swiss machining centers in 18K Rose Gold Au750 to achieve the authentic 104.9g 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 Patek Philippe Cal. 26-330 S QA LU tested on the atelier workbench?
We record a personalized 4K bench video showing the Patek Philippe Cal. 26-330 S QA LU (28,800 vph, 72-hour reserve) running at +0.4 s/d, 298 deg on our Witschi Chronoscope alongside Fischer XRF and Mettler-Toledo gram scale verification.
What dial and bezel specifications distinguish Patek Philippe Aquanaut Ref. 5261R?
Reference 5261R combines Hand-Finished Collector Dial with Solid 18K Gold Applied Hour Markers & Hands and Satin-Brushed Rounded Octagonal Bezel with Mirror-Polished Chamfered Bevels with Anti-Reflective Scratch-Resistant Sapphire Crystal within a 39.9 mm x 10.9 mm 18K Rose Gold Au750 case weighing 104.9g, verified via Fischer XRF spectroscopy and powered by Patek Philippe Cal. 26-330 S QA LU.
Custom Patek Philippe Aquanaut Luce Annual Calendar 18K Rose Gold Chronometer Regulated Spec Ref. 5261R
5-Axis Swiss CNC 18K Rose Gold Au750 • 104.9g Verified Mass • Regulated Patek Philippe Cal. 26-330 S QA LU