Recorded in our Monte-Carlo solid 18K gold Patek Philippe register, the Patek Philippe Nautilus Moonphase & Power Reserve 18K Rose Gold Reference 5712R unites authentic Geneva proportions (40.0 mm x 8.52 mm) with a certified 18K Rose Gold Au750 mass of 105.6g. Every detail of the 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 hallmarked clasp is verified under our Fischer XRF Au750 and Mettler-Toledo laboratory protocol.

5 Core Horological & Metallurgical Specifications:

• Registered Entity & Ref: Patek Philippe Nautilus Moonphase & Power Reserve 18K Rose Gold — Official Reference 5712R (SKU: MC-AU750-5712R-W175).
• Precious Metal Alloy: 18K Rose Gold Au750 with deep mechanical hallmarking and 5-axis Swiss CNC case finishing.
• Verified Reference Mass: 105.6g confirmed on our Monte-Carlo showroom Mettler-Toledo analytical balance.
• Mechanical Calibre: Patek Philippe Cal. 240 PS IRM C LU - 22K Gold Micro-Rotor operating at 28,800 vph (4 Hz) with 72-hour power reserve (+0.4 s/d, 300 deg).
• Sapphire Crystal & QC: Scratch-resistant sapphire crystal with double anti-reflective coating and 60m / 6 ATM water resistance.

Within the same Patek Philippe horological silo, collectors also compare the Patek Philippe Aquanaut Jumbo 42.2mm 18K White Gold Custom SW Dial 22K Gold Rotor Ref. 5168G (120.5g) and the Patek Philippe Aquanaut Extra-Large Self-Winding 18K Rose Gold Chronometer Regulated Spec Ref. 5167R (108.2g).