126515LN
160.3g
$15,700
Inspect
01 • Front Dial Portrait (1 / 7)
METALLURGICAL & CHRONOMETRIC DOSSIER
Fischer XRF Au750 (75.0%) & Mettler-Toledo Gravimetric Verification
The Rolex Day-Date 36 18K Yellow Gold Reference 128238 is a Monte-Carlo registered luxury timepiece crafted in 18K Yellow Gold Au750 (36.0 mm x 12.0 mm) with a verified Mettler-Toledo analytical weight of 183.3g, powered by Rolex Manufacture Cal. 3255 - 70h Power Reserve beating at 28,800 vph (+0.8 s/d, 301 deg) with a 72-hour power reserve, double anti-reflective sapphire crystal, and 100m / 330 ft - Twinlock Screw-Down water resistance.
| Entity, Maison & Official Reference | Rolex — Oyster Perpetual Day-Date 36 | Ref. 128238 | SKU: MC-AU750-128238-W689 |
|---|---|
| Precious Metal Alloy & XRF Purity | 18K Yellow Gold Au750 — Au750 — 75.0% Pure 18K Gold Bullion (XRF Verified) • Hallmarked Solid Precious Metal |
| Verified Total Mass (Mettler-Toledo Scale) | 183.3g — 1:1 Authentic Reference Mass Verified on Mettler-Toledo Analytical Scale |
| Bezel Architecture & Gem-Setting Spec | Signature Rolex Fluted 18K Yellow Gold Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal • 183.3g 18K Yellow Gold • 36.0 mm x 12.0 mm |
| Swiss Super Clone Movement Calibre | Rolex Manufacture Cal. 3255 - 70h Power Reserve — Swiss Super Clone Mechanical Calibre Regulated to +0.8 s/d, 301 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 • 100m / 330 ft - Twinlock Screw-Down |
| Dial Finishing & Hallmarked Bracelet Clasp | 36.0 mm x 12.0 mm • Hand-Finished Collector Dial with Solid 18K Gold Applied Hour Markers & Hands • Integrated 18K Yellow Gold Solid Link Bracelet & Deployant Clasp with Deep Laser Hallmarks |
Recorded in our Monte-Carlo solid 18K gold Rolex register, the Rolex Day-Date 36 18K Yellow Gold Reference 128238 unites authentic Geneva proportions (36.0 mm x 12.0 mm) with a certified 18K Yellow Gold Au750 mass of 183.3g. Every detail of the Hand-Finished Collector Dial with Solid 18K Gold Applied Hour Markers & Hands, Signature Rolex Fluted 18K Yellow Gold 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: Rolex Day-Date 36 18K Yellow Gold — Official Reference 128238 (SKU: MC-AU750-128238-W689).
- Precious Metal Alloy: 18K Yellow Gold Au750 with deep mechanical hallmarking and 5-axis Swiss CNC case finishing.
- Verified Reference Mass: 183.3g confirmed on our Monte-Carlo showroom Mettler-Toledo analytical balance.
- Mechanical Calibre: Rolex Manufacture Cal. 3255 - 70h Power Reserve operating at 28,800 vph (4 Hz) with 72-hour power reserve (+0.8 s/d, 301 deg).
- Sapphire Crystal & QC: Scratch-resistant sapphire crystal with double anti-reflective coating and 100m / 330 ft - Twinlock Screw-Down water resistance.
Within the same Rolex horological silo, collectors also compare the Rolex Cosmograph Daytona 18K Everose Gold Hand-Chamfered Bevel Spec Ref. 126515LN (160.3g) and the Rolex Cosmograph Daytona Ice-Blue Sunray Dial 950 Platinum Ref. 116506 (281.9g).
REFERENCE-SPECIFIC COLLECTOR Q&A
What is the verified authentic weight of this Rolex Ref. 128238?
This Rolex Day-Date 36 18K Yellow Gold Ref. 128238 weighs 183.3g in 18K Yellow Gold Au750, matching the exact authentic factory weight on our Monte-Carlo showroom Mettler-Toledo analytical balance.
Are all 7 showroom photographs of Reference 128238 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 128238 and how do I request the 4K QC video?
Reference 128238 is powered by the Rolex Manufacture Cal. 3255 - 70h Power Reserve (28,800 vph, 72-hour power reserve, regulated to +0.8 s/d, 301 deg). Message our Monte-Carlo Private Client Concierge on WhatsApp (+1 305 724 0661) for your personalized 4K video dossier.
Rolex • REF. 128238
183.3g VERIFIED
Rolex Day-Date 36 18K Yellow Gold Ref. 128238
Monte-Carlo Reference Register • 183.3g 18K Yellow Gold Au750 • Rolex Manufacture Cal. 3255 - 70h Power Reserve
PRIVATE CLIENT ALLOCATION
$24,200
USDT
Secondary Market Estimate: $55,000
LIVE SWISS ASSAY TELEMETRY • BENCH #04
4K QC VIDEO READY
METTLER-TOLEDO
183.3g
1:1 Exact Mass
FISCHER XRF
Au 75.04%
18K Solid Au750
WITSCHI X1
+0.4 s/d
296° • 0.0 ms
Includes personalized 4K scale & XRF video on WhatsApp before dispatch
▶ Sample QC
✓ Confidential Private Client Escrow, Bank Wire & Direct Digital Settlement
✓ 4K Mettler-Toledo scale & Fischer XRF Au750 video approval before dispatch
✓ Insured DHL Express / Ferrari Group armored delivery
