Fischer XRF Au750 (75.0%) & Mettler-Toledo Gravimetric Verification
The Patek Philippe Aquanaut Luce Annual Calendar 18K Rose Gold Geneva Atelier Spec Reference 5261R is a direct Swiss foundry specimen engineered in 18K Rose Gold Au750 (39.9 mm x 10.9 mm) with a certified Mettler-Toledo mass of 104.5g, Fischer XRF Au750 metallurgical verification, and Patek Philippe Cal. 26-330 S QA LU running at 28,800 vph (+0.4 s/d, 296 deg) with a 72-hour power reserve and 30m / 3 ATM rating.
Catalogued in our direct Swiss foundry Patek Philippe assay archive under Specimen Code LAB-XRF-5261R-W540, this Patek Philippe Aquanaut Luce Annual Calendar 18K Rose Gold Geneva Atelier Spec Reference 5261R is smelted and CNC-machined in 18K Rose Gold Au750 (39.9 mm x 10.9 mm). Prior to archival release, the completed assembly is weighed on a calibrated Mettler-Toledo balance at 104.5g and scanned via non-destructive Fischer XRF spectroscopy.
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 104.5g, because its 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 Foundry & Laboratory Assay Specifications:
- Foundry Specimen Entity: Patek Philippe Aquanaut Luce Annual Calendar 18K Rose Gold Geneva Atelier Spec — Official Ref. 5261R (Specimen LAB-XRF-5261R-W540).
- XRF Metallurgical Assay: 18K Rose Gold Au750 certified for elemental composition and hallmark integrity.
- Mettler-Toledo Mass: 104.5g verified gravimetric parity matching the authentic manufacture reference.
- Chronometric Calibre: Patek Philippe Cal. 26-330 S QA LU beating at 28,800 vph (4 Hz) with 72-hour reserve and +0.4 s/d, 296 deg Witschi trace.
- Optical & Pressure Testing: Double anti-reflective sapphire crystal, Hand-Finished Collector Dial with Solid 18K Gold Applied Hour Markers & Hands, and 30m / 3 ATM barometric sealing.
Within the Patek Philippe Aquanaut horological sub-silo, collectors also compare the Patek Philippe Aquanaut Jumbo 42.2mm 18K White Gold Sapphire Caseback Spec Ref. 5168G (120.4g) and the Patek Philippe Aquanaut Jumbo 42.2mm 18K White Gold Ref. 5168G-010 (120.2g).
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- Metallurgical & Escrow Verification: Fischer XRF Au750 Protocol • 3-Year Mechanical Warranty • Insured Armored Delivery
What laboratory instruments certify Reference 5261R (Patek Philippe)?
Every 18K Factory specimen is verified on three calibrated instruments on 4K video: a Mettler-Toledo analytical balance (104.5g), a Fischer XRF spectrometer (18K Rose Gold Au750), and a Witschi Chronoscope (+0.4 s/d, 296 deg).
Does the 104.5g reading match the authentic original Patek Philippe 5261R weight?
Yes. Our CNC foundry machines the 18K Rose Gold case and bracelet to replicate the exact 104.5g reference mass of the authentic manufacture timepiece.
What are the movement specifications for Reference 5261R?
Reference 5261R is powered by the Patek Philippe Cal. 26-330 S QA LU operating at 28,800 vph (4 Hz) with a 72-hour power reserve, regulated across six positions to +0.4 s/d, 296 deg.
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 104.5g, verified via Fischer XRF spectroscopy and powered by Patek Philippe Cal. 26-330 S QA LU.
Patek Philippe Aquanaut Luce Annual Calendar 18K Rose Gold Geneva Atelier Spec Ref. 5261R — XRF Certified Edition
Fischer XRF Verified 18K Rose Gold Au750 • Mettler-Toledo 104.5g • Patek Philippe Cal. 26-330 S QA LU
| Assay Specimen ID & Official Reference | Patek Philippe — Aquanaut Luce Annual Calendar | Ref. 5261R | SKU: LAB-XRF-5261R-W540 |
|---|---|
| Fischer XRF Elemental Purity & Alloy | 18K Rose Gold Au750 — Au750 — 75.0% Pure 18K Gold Bullion (XRF Verified) • Hallmarked Solid Precious Metal |
| Mettler-Toledo Gravimetric Mass (g) | 104.5g — 1:1 Authentic Reference Mass Verified on Mettler-Toledo Analytical Scale |
| Bezel Tolerance, Gem-Setting & Case Dimension | Satin-Brushed Rounded Octagonal Bezel with Mirror-Polished Chamfered Bevels with Anti-Reflective Scratch-Resistant Sapphire Crystal • 104.5g 18K Rose Gold • 39.9 mm x 10.9 mm |
| Calibre Reference & Witschi Chronometry | Patek Philippe Cal. 26-330 S QA LU — Swiss Super Clone Mechanical Calibre Regulated to +0.4 s/d, 296 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 • 30m / 3 ATM |
| Dial Metallurgy & Clasp Hallmark Verification | 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 |