Datejust 31 Rolesor Yellow Domed Diamond / Jubilee / MOP Diamond

About This Watch

The Rolex Datejust 31 Reference 178343-0017 stands as a masterclass in restrained opulence, blending the enduring elegance of the Datejust collection with contemporary refinements. Its white mother-of-pearl dial, polished to a matte finish, captures light with a subtle iridescence that shifts under different angles, a hallmark of Rolex’s mastery over natural materials. The dial is framed by gem-set indexes, their discreet sparkle complementing the stick hands and the watch’s overall restraint. The case, crafted in Rolesor—a harmonious blend of yellow gold and stainless steel—adds warmth and durability, while the domed sapphire crystal enhances the dial’s three-dimensional presence. At 31mm in diameter, the watch adheres to the Datejust’s legacy of proportion, a size that balances modern wearability with the collection’s mid-20th-century heritage as a symbol of timeless sophistication. Beneath the caseback lies the Caliber 2235, an automatic movement distinguished by its Parachrom balance spring and a date display that operates with precision. The Jubilee bracelet, with its five-link design and polished edges, ensures a secure yet comfortable fit, a testament to Rolex’s engineering ingenuity. The watch’s 100-meter water resistance and closed caseback underscore its practicality without compromising its sartorial appeal. This timepiece is for the discerning individual who values understated luxury, seeking a watch that transcends trends while honoring tradition. It suits formal occasions with its refined presence, yet its versatility makes it equally at home in everyday life—a quiet assertion of craftsmanship and legacy.

In Context

At 31 mm it is small by current standards, in the range most wristwatches occupied before cases began growing through the 1990s. The case back is closed, so the movement stays out of sight, and the sapphire crystal will resist everything short of deliberate abuse. 100 m is genuine swimming resistance — more than the shape of this watch suggests it would need.

The movement winds itself from the motion of your wrist. 48 hours of reserve is enough to set it down on Friday evening and find it still running on Monday. At 28,800 vph the seconds hand advances 8 times a second.

178343-0017 is one of 34 executions of the 178343 base reference. Underneath they are the same watch; what separates this one is a white matte dial.

Rolex

Green · Yellow Gold, Stainless Steel

178343-0001 · 31 mm

Rolex

Silver · Yellow Gold, Stainless Steel

178343-0002 · 31 mm

Rolex

Champagne · Yellow Gold, Stainless Steel

178343-0003 · 31 mm

Rolex

White · Yellow Gold, Stainless Steel

178343-0004 · 31 mm

Rolex

Champagne · Yellow Gold, Stainless Steel

178343-0005 · 31 mm

Rolex

White

178343-0006 · 31 mm

Rolex

White

178343-0007 · 31 mm

Rolex

Black

178343-0008 · 31 mm

+ 25 more variants in this family.

The 2235 is the small Rolex automatic of the six-digit generation, a 20 mm movement with a date. It carried the Datejust 31 and the 26 mm Lady-Datejust from around 2000 until the 2236 replaced it. It powers 733 watches in this library. It has 31 jewels, a 48-hour reserve and a beat of 28,800 vph, and every one is a COSC chronometer. It is the same architecture as the [2236](/calibers/rolex-2236) that followed, without the silicon Syloxi hairspring and with seven hours less reserve; the [2236 piece](/blog/the-rolex-2236-the-most-common-movement-in-this-library) explains what changed. The library finds it almost entirely in the [Datejust 31](/brands/rolex/datejust-31): 682 references, the 1782xx generation, whose 45 base references and hundreds of dial variants make that collection the largest here. The 26 mm [Lady-Datejust](/brands/rolex/lady-datejust) of the 1791xx generation accounts for 29, the [Pearlmaster](/brands/rolex/pearlmaster) 29 mm and 34 mm for 19, and the 35 mm Yacht-Master for 3. A six-digit Datejust 31 reference is a 2235; the seven-digit one is a 2236, as the [reference-number guide](/blog/how-to-read-a-watch-reference-number) explains. The 2231 was its no-date sibling in the Oyster Perpetual, and the [3135](/calibers/rolex-3135) its counterpart in the 36 mm cases.

732 other watches in the library run the Rolex 2235.

Rolex

Datejust 31 Yellow Gold Diamond / Oyster / Black MOP

178158-0056 · 31 mm

Rolex

Datejust 31 Stainless Steel Diamond / Oyster / Pink MOP

178384-0061 · 31 mm

Rolex

Datejust 31 Rolesor Everose Domed / Jubilee / Black MOP

178241-0043 · 31 mm

Rolex

Datejust 31 Yellow Gold Domed / Oyster / Champagne Roman

178248-0079 · 31 mm