Rolex Datejust 31 31 mm 278274SDO Steel/White Gold Silver

The Rolex Datejust is one of the most storied watch families in horological history, introduced in 1945 as the first self-winding wristwatch to display the date in a window on the dial. Over eight decades the design has remained immediately recognizable while evolving in materials, sizing, and dial artistry. The 31 mm format occupies a sweet spot in the modern Datejust lineup—generous enough to wear as a bold statement yet refined enough to sit elegantly on a wide range of wrist sizes.

Reference 278274SDO is built on a 31 mm Oyster case that combines Rolex's proprietary Oystersteel with 18k white gold—a pairing that delivers the durability of a stainless steel sports watch and the prestige of a precious-metal dress piece simultaneously. The monometallic Oyster case architecture is Rolex's hallmark, machined to extremely tight tolerances and secured with a screw-down Twinlock crown that contributes to the watch's 100-meter (330-foot) water resistance.

The silver dial of the 278274SDO is set with diamonds at the hour markers, lending every glance at the time a quiet sparkle that elevates this reference beyond a standard steel Datejust. Framing the dial is an 18k white gold fluted bezel, the grooved and polished finish of which catches light from every angle and echoes Rolex's heritage of pairing the Datejust with precious-metal bezels since the model's earliest years. The result is a dial-and-bezel combination that reads as cohesive, not busy.

The watch is worn on the Oyster bracelet, Rolex's three-piece link design celebrated for its flat-profile comfort and long-term durability. Its brushed center links and polished outer links mirror the mixed finishing of the case, creating a unified two-tone aesthetic from lug to clasp. An automatic movement powers the watch, providing the self-winding convenience and accuracy that Datejust owners expect for everyday wear.

At Bizak & Co. we source pre-owned and unworn luxury watches with care, presenting each reference with straightforward, grounded information so buyers can make confident decisions. The Rolex Datejust 31 ref. 278274SDO is a compelling opportunity for collectors seeking a mid-size two-tone Datejust with diamond dial finishing at a price point outside the authorized-dealer queue. Contact Bizak & Co. today to ask about availability, condition details, and secure purchase options—our team is ready to help you add this iconic reference to your collection.