Recorded in our Monte-Carlo solid 18K gold Audemars Piguet register, the Audemars Piguet Royal Oak Selfwinding 41mm 18K Rose Gold Reference 15510OR.OO.1320OR.01 unites authentic Geneva proportions (41.0 mm x 10.5 mm) with a certified 18K Rose Gold Au750 mass of 224.1g. Every detail of the Hand-Finished Collector Dial with Solid 18K Gold Applied Hour Markers & Hands, Octagonal Brushed & Chamfered Bezel Locked by 8 White Gold Hexagonal Screws 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: Audemars Piguet Royal Oak Selfwinding 41mm 18K Rose Gold — Official Reference 15510OR.OO.1320OR.01 (SKU: MC-AU750-15510OR.OO.1320OR.01-W462).
• Precious Metal Alloy: 18K Rose Gold Au750 with deep mechanical hallmarking and 5-axis Swiss CNC case finishing.
• Verified Reference Mass: 224.1g confirmed on our Monte-Carlo showroom Mettler-Toledo analytical balance.
• Mechanical Calibre: Audemars Piguet Cal. 4302 - 70h Power Reserve operating at 28,800 vph (4 Hz) with 72-hour power reserve (+0.6 s/d, 299 deg).
• Sapphire Crystal & QC: Scratch-resistant sapphire crystal with double anti-reflective coating and 50m / 5 ATM water resistance.

Within the same Audemars Piguet horological silo, collectors also compare the Audemars Piguet Royal Oak Double Balance Wheel Openworked 41mm 18K Rose Gold Ref. 15407OR (224.7g) and the Audemars Piguet Royal Oak Double Balance Wheel Openworked 41mm 18K White Gold Ref. 15412BC.SS.1220BC.02 (224.6g).