Fischer XRF Au750 (75.0%) & Mettler-Toledo Gravimetric Verification
The Audemars Piguet Royal Oak Perpetual Calendar 41mm 18K White Gold Reference 26574BC.OO.1220BC.01 is a Monte-Carlo registered luxury timepiece crafted in 18K White Gold Au750 (41.0 mm x 9.5 mm) with a verified Mettler-Toledo analytical weight of 225.3g, powered by Audemars Piguet Cal. 5134 Ultra-Thin Perpetual beating at 28,800 vph (+0.4 s/d, 302 deg) with a 72-hour power reserve, double anti-reflective sapphire crystal, and 20m / 2 ATM water resistance.
| Entity, Maison & Official Reference | Audemars Piguet — Royal Oak Perpetual Calendar 41mm | Ref. 26574BC.OO.1220BC.01 | SKU: MC-AU750-26574BC.OO.1220BC.01-W465 |
|---|---|
| Precious Metal Alloy & XRF Purity | 18K White Gold Au750 — Au750 — 75.0% Pure 18K Gold Bullion (XRF Verified) • Hallmarked Solid Precious Metal |
| Verified Total Mass (Mettler-Toledo Scale) | 225.3g — 1:1 Authentic Reference Mass Verified on Mettler-Toledo Analytical Scale |
| Bezel Architecture & Gem-Setting Spec | Octagonal Brushed & Chamfered Bezel Locked by 8 White Gold Hexagonal Screws with Anti-Reflective Scratch-Resistant Sapphire Crystal • 225.3g 18K White Gold • 41.0 mm x 9.5 mm |
| Swiss Super Clone Movement Calibre | Audemars Piguet Cal. 5134 Ultra-Thin Perpetual — Swiss Super Clone Mechanical Calibre Regulated to +0.4 s/d, 302 deg |
| Power Reserve & Oscillation Frequency | 72-Hour Power Reserve • 28,800 vph (4 Hz) Free-Sprung Balance Wheel |
| Double AR Sapphire Crystal & Water Resistance | Scratch-Resistant Sapphire Crystal with Double Anti-Reflective Coating • 20m / 2 ATM |
| Dial Finishing & Hallmarked Bracelet Clasp | 41.0 mm x 9.5 mm • Hand-Finished Collector Dial with Solid 18K Gold Applied Hour Markers & Hands • Integrated 18K White Gold Solid Link Bracelet & Deployant Clasp with Deep Laser Hallmarks |
Recorded in our Monte-Carlo solid 18K gold Audemars Piguet register, the Audemars Piguet Royal Oak Perpetual Calendar 41mm 18K White Gold Reference 26574BC.OO.1220BC.01 unites authentic Geneva proportions (41.0 mm x 9.5 mm) with a certified 18K White Gold Au750 mass of 225.3g. 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 Perpetual Calendar 41mm 18K White Gold — Official Reference 26574BC.OO.1220BC.01 (SKU: MC-AU750-26574BC.OO.1220BC.01-W465).
- Precious Metal Alloy: 18K White Gold Au750 with deep mechanical hallmarking and 5-axis Swiss CNC case finishing.
- Verified Reference Mass: 225.3g confirmed on our Monte-Carlo showroom Mettler-Toledo analytical balance.
- Mechanical Calibre: Audemars Piguet Cal. 5134 Ultra-Thin Perpetual operating at 28,800 vph (4 Hz) with 72-hour power reserve (+0.4 s/d, 302 deg).
- Sapphire Crystal & QC: Scratch-resistant sapphire crystal with double anti-reflective coating and 20m / 2 ATM water resistance.
Within the same Audemars Piguet horological silo, collectors also compare the Audemars Piguet Royal Oak Double Balance Wheel Openworked 41mm Baguette Blue Topaz Bezel 18K White Gold Geneva Atelier Spec Ref. 15412BC.TO.1220BC.01 (224.1g) and the Audemars Piguet Royal Oak Selfwinding 41mm 18K White Gold Ref. 15510BC.OO.1320BC.01 (223.6g).
What is the verified authentic weight of this Audemars Piguet Ref. 26574BC.OO.1220BC.01?
This Audemars Piguet Royal Oak Perpetual Calendar 41mm 18K White Gold Ref. 26574BC.OO.1220BC.01 weighs 225.3g in 18K White Gold Au750, matching the exact authentic factory weight on our Monte-Carlo showroom Mettler-Toledo analytical balance.
Are all 7 showroom photographs of Reference 26574BC.OO.1220BC.01 unedited studio shots?
Yes. All 7 gallery plates show the actual timepiece captured across multiple studio angles on our quality-control bench with zero stock renders.
Which movement powers Reference 26574BC.OO.1220BC.01 and how do I request the 4K QC video?
Reference 26574BC.OO.1220BC.01 is powered by the Audemars Piguet Cal. 5134 Ultra-Thin Perpetual (28,800 vph, 72-hour power reserve, regulated to +0.4 s/d, 302 deg). Message our Monte-Carlo Private Client Concierge on WhatsApp (+1 305 724 0661) for your personalized 4K video dossier.
Audemars Piguet Royal Oak Perpetual Calendar 41mm 18K White Gold Ref. 26574BC.OO.1220BC.01
Monte-Carlo Reference Register • 225.3g 18K White Gold Au750 • Audemars Piguet Cal. 5134 Ultra-Thin Perpetual
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