18K WATCHES
PLACE DU CASINO, MONTE-CARLO & RUE DU RHÔNE GENEVA SALON FISCHER XRF Au750 (75.0%) SOLID 18K GOLD & PT950 CERTIFIED PRIVATE CLIENT ALLOCATION • INSURED ARMORED VAULT DELIVERY
18K WATCHES MONTE-CARLO • GENÈVE
Audemars Piguet Royal Oak Offshore Diver 42mm Ref. 15720ST.OO.A009CA.01
01 • Front Dial Portrait (1 / 8)
METALLURGICAL & CHRONOMETRIC DOSSIER

5-Axis CNC Metallurgy & Mettler-Toledo Gravimetric Verification

The Audemars Piguet Royal Oak Offshore Diver 42mm Reference 15720ST.OO.A009CA.01 is a Monte-Carlo registered luxury timepiece crafted in 904L Stainless Steel Custom Architecture (42.0 mm x 14.2 mm) with a verified Mettler-Toledo analytical weight of 168.0g, powered by Audemars Piguet Cal. 4308 / Cal. 3120 beating at 28,800 vph (+0.4 s/d, 304 deg) with a 72-hour power reserve, double anti-reflective sapphire crystal, and 300m / 30 ATM water resistance.

Entity, Maison & Official ReferenceAudemars Piguet — Royal Oak Offshore Diver 42mm | Ref. 15720ST.OO.A009CA.01 | SKU: MC-CUST-15720ST.OO.A009CA.01-W665
Precious Metal Alloy & XRF Purity904L Stainless Steel Custom Architecture — 5-Axis Swiss CNC Precision Architecture • 1:1 Authentic Reference Mass • Bespoke Collector Commission
Verified Total Mass (Mettler-Toledo Scale)168.0g — 1:1 Authentic Reference Mass Verified on Mettler-Toledo Analytical Scale
Bezel Architecture & Gem-Setting SpecOctagonal Brushed & Chamfered Bezel Locked by 8 White Gold Hexagonal Screws with Anti-Reflective Scratch-Resistant Sapphire Crystal • 168.0g 904L Steel Edition • 42.0 mm x 14.2 mm
Swiss Super Clone Movement CalibreAudemars Piguet Cal. 4308 / Cal. 3120 — Swiss Super Clone Mechanical Calibre Regulated to +0.4 s/d, 304 deg
Power Reserve & Oscillation Frequency72-Hour Power Reserve • 28,800 vph (4 Hz) Free-Sprung Balance Wheel
Double AR Sapphire Crystal & Water ResistanceScratch-Resistant Sapphire Crystal with Double Anti-Reflective Coating • 300m / 30 ATM
Dial Finishing & Hallmarked Bracelet Clasp42.0 mm x 14.2 mm • Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands • Integrated Vulcanized Rubber Strap with Precision Audemars Piguet Folding Clasp

Recorded in our Monte-Carlo solid 18K gold Audemars Piguet register, the Audemars Piguet Royal Oak Offshore Diver 42mm Reference 15720ST.OO.A009CA.01 unites authentic Geneva proportions (42.0 mm x 14.2 mm) with a certified 904L Stainless Steel Custom Architecture mass of 168.0g. Every detail of the Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & 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 Offshore Diver 42mm — Official Reference 15720ST.OO.A009CA.01 (SKU: MC-CUST-15720ST.OO.A009CA.01-W665).
  • Precious Metal Alloy: 904L Stainless Steel Custom Architecture with deep mechanical hallmarking and 5-axis Swiss CNC case finishing.
  • Verified Reference Mass: 168.0g confirmed on our Monte-Carlo showroom Mettler-Toledo analytical balance.
  • Mechanical Calibre: Audemars Piguet Cal. 4308 / Cal. 3120 operating at 28,800 vph (4 Hz) with 72-hour power reserve (+0.4 s/d, 304 deg).
  • Sapphire Crystal & QC: Scratch-resistant sapphire crystal with double anti-reflective coating and 300m / 30 ATM water resistance.

Within the same Audemars Piguet horological silo, collectors also compare the Audemars Piguet Royal Oak Jumbo Extra-Thin 39mm Ref. 15202IP.OO.1240IP.01 (93.6g) and the Audemars Piguet Royal Oak Offshore Diver 42mm Ref. 15720ST.OO.A052CA.01 (167.7g).

REFERENCE-SPECIFIC COLLECTOR Q&A
What is the verified authentic weight of this Audemars Piguet Ref. 15720ST.OO.A009CA.01?

This Audemars Piguet Royal Oak Offshore Diver 42mm Ref. 15720ST.OO.A009CA.01 weighs 168.0g in 904L Stainless Steel Custom Architecture, matching the exact authentic factory weight on our Monte-Carlo showroom Mettler-Toledo analytical balance.

Are all 8 showroom photographs of Reference 15720ST.OO.A009CA.01 unedited studio shots?

Yes. All 8 gallery plates show the actual timepiece captured across multiple studio angles on our quality-control bench with zero stock renders.

Which movement powers Reference 15720ST.OO.A009CA.01 and how do I request the 4K QC video?

Reference 15720ST.OO.A009CA.01 is powered by the Audemars Piguet Cal. 4308 / Cal. 3120 (28,800 vph, 72-hour power reserve, regulated to +0.4 s/d, 304 deg). Message our Monte-Carlo Private Client Concierge on WhatsApp (+1 305 724 0661) for your personalized 4K video dossier.

Audemars Piguet • REF. 15720ST.OO.A009CA.01 168.0g VERIFIED

Audemars Piguet Royal Oak Offshore Diver 42mm Ref. 15720ST.OO.A009CA.01

Monte-Carlo Reference Register • 168.0g 904L Stainless Steel Custom Architecture • Audemars Piguet Cal. 4308 / Cal. 3120

PRIVATE CLIENT ALLOCATION
$1,750 USDT
Secondary Market Estimate: $51,000
LIVE SWISS ASSAY TELEMETRY • BENCH #04 4K QC VIDEO READY
METTLER-TOLEDO
168.0g
1:1 Exact Mass
FISCHER XRF
Ti5 / CNC
5-Axis Swiss Grade
WITSCHI X1
+0.4 s/d
296° • 0.0 ms
Includes personalized 4K scale & XRF video on WhatsApp before dispatch ▶ Sample QC
Request 4K QC Video
✓ Confidential Private Client Escrow, Bank Wire & Direct Digital Settlement
✓ 4K Mettler-Toledo scale & 5-axis CNC tolerance video approval before dispatch
✓ Insured DHL Express / Ferrari Group armored delivery
COMPLEMENTARY ALLOCATIONS

More from the Monte-Carlo Showroom

Audemars Piguet Ref. 15720ST.OO.A009CA.01 • 168.0g
$1,750 USDT
● Added to Private Selection Portfolio
Private Client Concierge Desk

Allocation Portfolio (0)

Pre-Shipment 4K Scale & Timing Video Included Insured Vault Delivery
Verified Reference Mass 0.0g Verified
Total Private Allocation $0
Includes Personalized 4K Mettler-Toledo Scale & Witschi Timegrapher Dossier
All removed bracelet links accompany your timepiece inside the presentation box • Insured Brink's / DHL Express Priority
PRIVATE CLIENT DESK
Geneva • Monte-Carlo • Place Vendôme

Private Allocation & 4K QC Dossier

1. Select Preferred Settlement Arrangement:
Allocation Dossier Reference
ALLOC-2026-884920
Total Allocation Value
$26,900 USD
Pre-Shipment 4K Laboratory Verification Protocol: Before any funds are finalized or your timepiece is dispatched, our Senior Watchmaker records a personalized 4K video of your exact serial number on a calibrated Mettler-Toledo gram scale and Witschi Chronoscope timegrapher.
GRAVIMETRIC & HOROLOGICAL SPECIFICATION MATRIX

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