Natural mother of pearl varies from piece to piece, giving each dial a fingerprint-like uniqueness. The 128238 with MOP diamond face channels this organic beauty into Rolex’s most formal platform — a 36mm Day-Date on President bracelet. The result is a timepiece that reads differently under every light source, from cool office fluorescents to warm evening candlelight.
Key Specifications
| Specification | Detail |
|---|---|
| Reference | 128238 |
| Case Size | 36mm |
| Case Material | Yellow Gold Plated |
| Bezel | Fluted, yellow gold |
| Dial Color | Mother of Pearl |
| Dial Type | Gem-set (diamond hour markers) |
| Crystal | Sapphire with anti-reflective coating |
| Movement | Caliber 3155 / 3255 Automatic |
| Water Resistance | 30m |
| Bracelet | President (yellow gold plated) |
| Clasp | Concealed Crown clasp |
| Functions | Day display (12 o’clock), Date (3 o’clock), Center seconds |
The 128238 Up Close: Case, Dial and Bracelet
At 36mm, this Day-Date sits comfortably on smaller to medium wrists without sacrificing presence. The yellow gold plated case frames the iridescent MOP dial, where light dances across the nacre surface and catches each diamond index individually. The fluted bezel adds its own pattern of light refraction, creating visual depth at every angle.
Below the dial, the President bracelet maintains the all-gold aesthetic with its signature three-link construction. The concealed clasp design preserves a clean bracelet line from any viewing position. Browse the complete Day-Date collection for every available configuration.
Movement Options: Swiss vs Japanese
Choose between two proven automatic calibers tailored for the Day-Date’s dual calendar function:
- Swiss Automatic — Based on the 3255-series architecture, running at 28,800 vph. Approximately 70-hour power reserve, quickset day and date, hacking seconds for precise time setting.
- Japanese Automatic (Miyota) — Reliable 21,600 vph movement with ~42-hour reserve. Easily serviced worldwide, excellent shock resistance for everyday use.
Each caliber delivers smooth winding and dependable day-date transitions at midnight.
Shipping, Warranty and Returns
Every order ships with discreet packaging and full tracking. Delivery times vary by destination — see our shipping policy for detailed timeframes and methods. This watch is covered by our standard movement warranty. If your purchase does not meet expectations, review our return and exchange policy for available options.










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