Rolex Day-Date 40 40 mm 228398TBRWMOPD Yellow Gold/Diamonds White Mother of Pearl Rolex Day-Date 40 40 mm 228398TBRWMOPD Yellow…

The Rolex Day-Date 40 reference 228398TBRWMOPD represents the ultimate expression of the watchmaker's most prestigious collection. Introduced in 1956, the Day-Date was the first wristwatch to display both the date and the full day of the week spelled out in full, and it has been crafted exclusively in precious metals ever since. The 40mm case size — introduced with the generation known as the Day-Date 40 — offers a more commanding wrist presence than the classic 36mm predecessor while remaining true to the dressy, formal character the model has always embodied.

The case of reference 228398TBRWMOPD is crafted entirely in 18k yellow gold, Rolex's own proprietary alloy refined in-house for superior color and durability. Yellow gold has long been the signature choice for the Day-Date, synonymous with heads of state, executives, and tastemakers who have worn the model since its earliest years. The substantial 40mm case is polished and proportioned with the architectural precision Rolex brings to every detail.

The dial is fashioned from white mother-of-pearl, a natural organic material harvested from mollusk shells that exhibits a soft, shifting iridescence impossible to replicate in lacquer or enamel. No two mother-of-pearl dials are identical, giving this reference an inherently unique character. Diamond hour markers set within the dial complement the stone-set bezel and reinforce the watch's position as a jeweler's timepiece as much as a horological one.

The bezel is set with baguette-cut diamonds — rectangular step-cut stones arranged in a continuous channel that encircles the dial with geometric brilliance. Baguette diamonds demand exceptional lapidary skill to match for color, clarity, and dimension, and Rolex's in-house gem-setting atelier subjects every stone to rigorous quality standards before it reaches the finished watch. This bezel treatment elevates reference 228398TBRWMOPD beyond the standard fluted or smooth bezel options and places it firmly in the haute joaillerie tier of the Day-Date range.

Power comes from an automatic movement, ensuring the watch winds itself through the natural motion of the wearer's wrist. The Day-Date 40 generation is driven by Rolex's modern-era caliber platform, a manufacture movement renowned for its precision, robustness, and Superlative Chronometer certification, which guarantees accuracy to within plus or minus two seconds per day — a standard significantly tighter than the official COSC benchmark. The watch also offers water resistance to 100 meters, a practical specification that belies the watch's formal appearance.

Bizak & Co. is proud to offer the Rolex Day-Date 40 228398TBRWMOPD to discerning collectors and first-time luxury buyers alike. Whether you are looking to buy this iconic reference online or simply want to learn more about its specifications and provenance, our team is ready to assist. Browse our inventory at bizakandco.com or reach out directly — acquiring a watch of this caliber should be a seamless, expert-guided experience.