Datejust 31 Rolesor Yellow Diamond / Oyster / MOP

About This Watch

The Rolex Datejust 31 178383-0020 stands apart as a masterful fusion of tradition and refinement, embodying the enduring elegance of the Datejust collection since its introduction in 1945. Its dial, a luminous white mother-of-pearl surface, is framed by gem-set indexes that catch light with quiet sophistication, while stick hands add a sense of timeless precision. The case, crafted in Rolesor—a harmonious blend of 18ct yellow gold and stainless steel—offers both resilience and a warm, opulent hue that complements the dial’s natural iridescence. This iteration of the Datejust 31, with its 31mm diameter, balances proportion and presence, making it a discreet yet impactful statement. At its core lies the Caliber 2235, an automatic movement celebrated for its reliability and the inclusion of a Parachrom blue balance spring, which enhances resistance to shocks and magnetic interference. The watch’s closed caseback and sapphire crystal ensure a seamless, uninterrupted view of the dial, while its 100-meter water resistance underscores practicality without compromising its role as a sartorial icon. The Datejust collection, a cornerstone of Rolex’s legacy, has long symbolized the intersection of craftsmanship and accessibility, and this model continues that tradition with understated luxury. Suited for those who value discretion as much as heritage, the Datejust 31 178383-0

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.

178383-0020 is one of 33 executions of the 178383 base reference. Underneath they are the same watch; what separates this one is a white dial.

Rolex

Champagne · Yellow Gold, Stainless Steel

178383-0001 · 31 mm

Rolex

Champagne · Yellow Gold, Stainless Steel

178383-0002 · 31 mm

Rolex

White

178383-0003 · 31 mm

Rolex

Green · Yellow Gold, Stainless Steel

178383-0005 · 31 mm

Rolex

Champagne · Yellow Gold, Stainless Steel

178383-0006 · 31 mm

Rolex

Silver · Yellow Gold, Stainless Steel

178383-0007 · 31 mm

Rolex

White

178383-0008 · 31 mm

Rolex

Black

178383-0009 · 31 mm

+ 24 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