Rolex Yellow Gold President Day Date 40mm Onyx Diamond Dial Trapeze Diamond Bezel – 228398TBR – New 2026

The Rolex Day-Date 40 ref. 228398TBR in 18k yellow gold is a masterclass in bold contrast and ultra-luxury materials. This 2026 model features a rare and exquisite black onyx dial, a natural stone prized for its deep, opaque intensity and mirror-like finish. The dark, velvety surface of the onyx provides a stunning backdrop for the two baguette-cut diamond hour markers at 6 and 9 o'clock, which appear to float within the deep black void. The aesthetic is framed by a factory trapeze-cut diamond bezel, which adds a structured, architectural glow to the warm 18k yellow gold case. Paired with the signature President bracelet, this timepiece is a powerful statement of "boss" luxury, blending the mystery of natural stone with the pinnacle of Rolex gem-setting.

Introduced in 1956, the Rolex Day-Date was the first wristwatch to display both the date and the full day of the week spelled out in full. Reserved exclusively for precious metals such as platinum or gold and paired with the iconic President bracelet, the Day-Date has long stood as a symbol of prestige, leadership, and achievement. Today, it remains one of the most distinguished and instantly recognizable timepieces produced by Rolex.

Gamzo & Co. is a trusted secondary-market luxury-watch dealer based in Los Angeles. We specialize in sourcing authentic, unworn and pre-owned Rolex and other fine timepieces, offering insured nationwide shipping, transparent service, and personalized attention — without waitlists or uncertainty.

faq

Free Overnight Shipping

• We offer free overnight shipping on every order.
• Every order is insured for added safety.
• Every jewelry order comes with our custom company gift bags and our jewelry boxes. 
• Every product is in a standard & discreet FedEx shipping box that won't give away what's inside.
• We offer US as well as international shipping.
• We ship with FedEx Overnight Insured signature confirmation.

Returns

• We appreciate your business and are committed to you even after delivery of our product.
• 30 day money back guarantee returns on all jewelry orders, unless otherwise specified on the product page.  We do not offer returns on watch orders.
• To request a refund, please contact us within the 30 day time frame.
• Once you request a refund, we will send you a fully insured, free shipping label via email. You can then ship the item back to us and once we receive and accept the product, we will issue you a full refund. 

We are here to help!

If you have any questions, please contact us at (213) 489-1118. 

 Prices and availability subject to change at any time and does not constitute a contract.