Gravimetric Mass & Chronometric Assay Bulletin
The Patek Philippe Nautilus Moonphase & Power Reserve Sapphire Caseback Spec Reference 5712/1A is a hallmarked 904L Stainless Steel Custom Architecture haute horlogerie timepiece measuring 40.0 mm x 8.52 mm with a verified Mettler-Toledo mass of 116.6g, powered by Patek Philippe Cal. 240 PS IRM C LU - 22K Gold Micro-Rotor operating at 28,800 vph (+0.7 s/d, 304 deg) with a 72-hour power reserve, double anti-reflective sapphire crystal, and 60m / 6 ATM water resistance.
| I. Official Maison Entity & Reference | Patek Philippe — Nautilus Moonphase & Power Reserve | Ref. 5712/1A | SKU: PV-CUST-5712/1A-W728 |
|---|---|
| II. Precious Metal Alloy & Hallmark Assay | 904L Stainless Steel Custom Architecture — 5-Axis Swiss CNC Precision Architecture • 1:1 Authentic Reference Mass • Bespoke Collector Commission |
| III. Certified Gravimetric Mass (Mettler-Toledo) | 116.6g — 1:1 Authentic Reference Mass Verified on Mettler-Toledo Analytical Scale |
| IV. Bezel Setting & Case Architecture | Satin-Brushed Rounded Octagonal Bezel with Mirror-Polished Chamfered Bevels with Anti-Reflective Scratch-Resistant Sapphire Crystal • 116.6g 904L Steel Edition • 40.0 mm x 8.52 mm |
| V. Mechanical Manufacture Calibre | Patek Philippe Cal. 240 PS IRM C LU - 22K Gold Micro-Rotor — Swiss Super Clone Mechanical Calibre Regulated to +0.7 s/d, 304 deg |
| VI. Power Reserve & Oscillation Frequency | 72-Hour Power Reserve • 28,800 vph (4 Hz) Free-Sprung Balance Wheel |
| VII. Double AR Sapphire Crystal & Hermeticity | Scratch-Resistant Sapphire Crystal with Double Anti-Reflective Coating • 60m / 6 ATM |
| VIII. Dial Finishing, Bracelet & Hallmarked Clasp | 40.0 mm x 8.52 mm • Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands • Hand-Brushed & Chamfered Integrated Solid Link Bracelet & Deployant Clasp |
Curated within our hallmarked solid 18K gold Patek Philippe collection, the Patek Philippe Nautilus Moonphase & Power Reserve Sapphire Caseback Spec Reference 5712/1A exemplifies haute horlogerie metallurgy in 904L Stainless Steel Custom Architecture. Milled to exact manufacture geometry (40.0 mm x 8.52 mm), the monobloc middle case, Satin-Brushed Rounded Octagonal Bezel with Mirror-Polished Chamfered Bevels with Anti-Reflective Scratch-Resistant Sapphire Crystal, and Hand-Brushed & Chamfered Integrated Solid Link Bracelet & Deployant Clasp achieve a verified analytical mass of 116.6g on our Fischer XRF Au750 and Mettler-Toledo assay bench.
What Are the Horological & Metallurgical Benchmarks of Patek Philippe Nautilus Ref. 5712/1A?
The Patek Philippe Nautilus Reference 5712/1A is a precision-engineered luxury timepiece crafted in 904L Stainless Steel Custom Architecture (40.0 mm x 8.52 mm) with Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & 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 116.6g, because its Patek Philippe Cal. 240 PS IRM C LU - 22K Gold Micro-Rotor movement is regulated across six positions to chronometric tolerances with a 72-hour power reserve.
5 Core Horological & Metallurgical Specifications:
- Entity & Reference: Patek Philippe Nautilus Moonphase & Power Reserve Sapphire Caseback Spec — Official Reference 5712/1A (SKU: PV-CUST-5712/1A-W728).
- Precious Metal Assay: 904L Stainless Steel Custom Architecture verified via non-destructive Fischer X-Ray Fluorescence spectroscopy.
- Gravimetric Parity: 116.6g total mass weighed on a calibrated Mettler-Toledo laboratory scale.
- Calibre & Oscillating System: Patek Philippe Cal. 240 PS IRM C LU - 22K Gold Micro-Rotor beating at 28,800 vph (4 Hz) with a 72-hour power reserve (+0.7 s/d, 304 deg).
- Crystal & Hermeticity: Scratch-resistant sapphire crystal with double anti-reflective coating and 60m / 6 ATM rating.
Within the Patek Philippe Nautilus horological sub-silo, collectors also compare the Patek Philippe Nautilus 40mm Skeleton Openworked Forged Carbon Ref. 5711/1A-010 (114.6g) and the Patek Philippe Nautilus Self-Winding Custom SW Dial Deep Crystal Optics Ref. 5711A (115.2g).
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- Metallurgical & Escrow Verification: Fischer XRF Au750 Protocol • 3-Year Mechanical Warranty • Insured Armored Delivery
What is the verified authentic gram weight of this Patek Philippe Ref. 5712/1A?
At 18K Solid Gold 18K Solid Gold Salon, this Patek Philippe Nautilus Moonphase & Power Reserve Sapphire Caseback Spec Ref. 5712/1A weighs 116.6g on our Mettler-Toledo analytical balance, matching the exact factory mass of the authentic 904L Steel Edition reference.
How is the 904L Stainless Steel Custom Architecture purity verified prior to dispatch?
Every timepiece undergoes non-destructive Fischer X-Ray Fluorescence (XRF) spectroscopy confirming elemental bullion composition alongside a personalized 4K scale and hallmark inspection video.
Which movement powers Reference 5712/1A and what is its power reserve?
Reference 5712/1A is equipped with the Patek Philippe Cal. 240 PS IRM C LU - 22K Gold Micro-Rotor operating at 28,800 vph (4 Hz) with a 72-hour power reserve, regulated in our Paris and Geneva workshop to +0.7 s/d, 304 deg.
What dial and bezel specifications distinguish Patek Philippe Nautilus Ref. 5712/1A?
Reference 5712/1A combines Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands and Satin-Brushed Rounded Octagonal Bezel with Mirror-Polished Chamfered Bevels with Anti-Reflective Scratch-Resistant Sapphire Crystal within a 40.0 mm x 8.52 mm 904L Stainless Steel Custom Architecture case weighing 116.6g, verified via Fischer XRF spectroscopy and powered by Patek Philippe Cal. 240 PS IRM C LU - 22K Gold Micro-Rotor.
Patek Philippe Nautilus Moonphase & Power Reserve Sapphire Caseback Spec Reference 5712/1A — Salon Edition
Bespoke Atelier Salon Edition • 116.6g Verified Mass • Patek Philippe Cal. 240 PS IRM C LU - 22K Gold Micro-Rotor