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18K WATCHES MONTE-CARLO • GENÈVE
Omega De Ville Tresor Co-Axial Master Chronometer 40mm Cal. 8901 Ref. 435.13.40.21.02.001
01 • Front Dial Portrait (1 / 6)
METALLURGICAL & CHRONOMETRIC DOSSIER

5-Axis CNC Metallurgy & Mettler-Toledo Gravimetric Verification

The Omega De Ville Tresor Co-Axial Master Chronometer 40mm Cal. 8901 Reference 435.13.40.21.02.001 is a Monte-Carlo registered luxury timepiece crafted in 904L Stainless Steel Custom Architecture (41.0 mm x 13.2 mm) with a verified Mettler-Toledo analytical weight of 149.2g, powered by Omega Co-Axial Master Chronometer Cal. 8900 beating at 28,800 vph (+0.5 s/d, 296 deg) with a 72-hour power reserve, double anti-reflective sapphire crystal, and 150m / 15 ATM water resistance.

Entity, Maison & Official ReferenceOmega — Seamaster / De Ville Co-Axial Collection | Ref. 435.13.40.21.02.001 | SKU: MC-CUST-435.13.40.21.02.001-W351
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)149.2g — 1:1 Authentic Reference Mass Verified on Mettler-Toledo Analytical Scale
Bezel Architecture & Gem-Setting SpecPrecision Brushed & Polished CNC Edition Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal • 149.2g 904L Steel Edition • 41.0 mm x 13.2 mm
Swiss Super Clone Movement CalibreOmega Co-Axial Master Chronometer Cal. 8900 — Swiss Super Clone Mechanical Calibre Regulated to +0.5 s/d, 296 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 • 150m / 15 ATM
Dial Finishing & Hallmarked Bracelet Clasp41.0 mm x 13.2 mm • Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands • Hand-Brushed & Chamfered Integrated Solid Link Bracelet & Deployant Clasp

Recorded in our Monte-Carlo solid 18K gold Omega register, the Omega De Ville Tresor Co-Axial Master Chronometer 40mm Cal. 8901 Reference 435.13.40.21.02.001 unites authentic Geneva proportions (41.0 mm x 13.2 mm) with a certified 904L Stainless Steel Custom Architecture mass of 149.2g. Every detail of the Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands, Precision Brushed & Polished CNC Edition Bezel 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: Omega De Ville Tresor Co-Axial Master Chronometer 40mm Cal. 8901 — Official Reference 435.13.40.21.02.001 (SKU: MC-CUST-435.13.40.21.02.001-W351).
  • Precious Metal Alloy: 904L Stainless Steel Custom Architecture with deep mechanical hallmarking and 5-axis Swiss CNC case finishing.
  • Verified Reference Mass: 149.2g confirmed on our Monte-Carlo showroom Mettler-Toledo analytical balance.
  • Mechanical Calibre: Omega Co-Axial Master Chronometer Cal. 8900 operating at 28,800 vph (4 Hz) with 72-hour power reserve (+0.5 s/d, 296 deg).
  • Sapphire Crystal & QC: Scratch-resistant sapphire crystal with double anti-reflective coating and 150m / 15 ATM water resistance.

Within the same Omega horological silo, collectors also compare the Omega Seamaster Aqua Terra 150M 41.5mm Cal. 8501 Ref. 231.10.42.21.03.001 (149.6g) and the Omega Seamaster Aqua Terra Worldtimer 45.5mm Ref. 215.92.46.22.01.006 (126.4g).

REFERENCE-SPECIFIC COLLECTOR Q&A
What is the verified authentic weight of this Omega Ref. 435.13.40.21.02.001?

This Omega De Ville Tresor Co-Axial Master Chronometer 40mm Cal. 8901 Ref. 435.13.40.21.02.001 weighs 149.2g in 904L Stainless Steel Custom Architecture, matching the exact authentic factory weight on our Monte-Carlo showroom Mettler-Toledo analytical balance.

Are all 6 showroom photographs of Reference 435.13.40.21.02.001 unedited studio shots?

Yes. All 6 gallery plates show the actual timepiece captured across multiple studio angles on our quality-control bench with zero stock renders.

Which movement powers Reference 435.13.40.21.02.001 and how do I request the 4K QC video?

Reference 435.13.40.21.02.001 is powered by the Omega Co-Axial Master Chronometer Cal. 8900 (28,800 vph, 72-hour power reserve, regulated to +0.5 s/d, 296 deg). Message our Monte-Carlo Private Client Concierge on WhatsApp (+1 305 724 0661) for your personalized 4K video dossier.

Omega • REF. 435.13.40.21.02.001 149.2g VERIFIED

Omega De Ville Tresor Co-Axial Master Chronometer 40mm Cal. 8901 Ref. 435.13.40.21.02.001

Monte-Carlo Reference Register • 149.2g 904L Stainless Steel Custom Architecture • Omega Co-Axial Master Chronometer Cal. 8900

PRIVATE CLIENT ALLOCATION
$2,100 USDT
Secondary Market Estimate: $22,500
LIVE SWISS ASSAY TELEMETRY • BENCH #04 4K QC VIDEO READY
METTLER-TOLEDO
149.2g
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

Omega Ref. 435.13.40.21.02.001 • 149.2g
$2,100 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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