Diamond Source NYC: The Rolex Datejust 31 – Reference 278243
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The Rolex Datejust 31 Reference 278243 is a quintessential expression of the brand’s heritage, utilizing the signature Yellow Rolesor—a harmonious marriage of Oystersteel and 18ct yellow gold. As a mid-size timepiece, it offers a sophisticated presence that bridges the gap between traditional femininity and modern sizing. At Diamond Source NYC, we highlight this reference as a cornerstone of the Datejust collection for those who demand the warmth of gold paired with the durability of steel.
The Yellow Rolesor Composition
Rolesor has been a hallmark of Rolex since the early 1930s. In the 278243, the bezel, winding crown, and the center links of the bracelet are crafted from 18ct yellow gold, while the middle case and outer links are made from Oystersteel. This combination ensures that the watch possesses the luster and investment value of precious metal while maintaining the ruggedness required for daily wear.
The Iconic Fluted Bezel
Unlike the smooth bezel of the all-steel models, the 278243 features the world-renowned Rolex fluted bezel. Originally designed for the functional purpose of screwing the bezel onto the case to ensure waterproofness, it has evolved into a purely aesthetic signature. The gold facets catch the light from every angle, providing a high-visibility sparkle that serves as an immediate identifier of a luxury Rolex timepiece.
Technical Specifications: Calibre 2236
Precision is at the core of the 278243. It is powered by the Calibre 2236, a self-winding mechanical movement that includes the patented Syloxi hairspring. This silicon component provides exceptional resistance to magnetic fields and shocks, ensuring the watch maintains its Superlative Chronometer status (-2/+2 seconds per day). The movement provides a 55-hour power reserve, making it reliable even if left off the wrist over a weekend.
Dials and Bracelet Configurations
The Reference 278243 is often paired with dials that complement the yellow gold accents. Popular configurations include the champagne-color dial with sunray finish, the silver dial, and the olive green dial, which has become a highly sought-after modern classic. Many of these dials are available with diamond-set hour markers in 18ct gold settings. The watch is typically fitted on the five-piece link Jubilee bracelet or the three-piece link Oyster bracelet, both featuring the hidden folding Crownclasp or the Oysterclasp with Easylink extension.
Acquiring the 278243 at Diamond Source NYC
Diamond Source NYC specializes in sourcing the most desirable Yellow Rolesor configurations for our clientele. Every Rolex 278243 in our inventory is verified for authenticity and condition by our on-site master watchmakers. We invite you to experience the weight and brilliance of this 31mm classic in our Manhattan showroom, where we offer personalized consultations for both new acquisitions and trades.