Strap for Datejust 31 Rolesor Yellow Fluted / Oyster / MOP Roman

The lug width of the Rolex Datejust 31 178273-0037 is 16mm. This measurement is specific to the 31mm case size and should be verified using a digital calliper positioned between the inner lug walls, excluding the lug thickness itself. It does not correspond to the lug width of larger Datejust references.

For the Datejust 31 178273-0037 with a mother-of-pearl dial and Rolesor yellow gold and steel case, the most suitable straps are vegetable-tanned alligator (dark tobacco or bordeaux) or cognac shell cordovan, which complement the dial's iridescence. Smooth navy blue calf leather is an excellent alternative for a more contemporary aesthetic. A polished steel pin buckle or a deployant clasp are the recommended closures.

To replace the strap on a Rolex Datejust 31, the spring bars connecting the strap to the case lugs must be removed. A forked springbar tool is inserted into the lug slot to compress the spring bar and release it. It is advisable to work on a soft surface to avoid scratching the case, and to use quality spring bars with a diameter compatible with the 16mm lug slots.

Yes, high-quality aftermarket straps are available for the Rolex Datejust 31 178273-0037. The key requirement is a lug width of exactly 16mm and a tapered heel shaped to follow the curvature of Rolex lugs. Milano Straps offers a curated selection of handcrafted leather, rubber and other straps developed specifically for this size, available online or made to measure at the Casati Milano atelier.

The lifespan of a leather strap on a Rolex Datejust 31 depends on the material, tanning process and frequency of wear. A vegetable-tanned alligator strap, properly kept away from water and excessive perspiration, can last between 3 and 7 years while retaining a refined appearance. Shell cordovan, owing to its dense fibre structure, tends to last even longer, developing a distinctive patina over time. Leather straps benefit from a neutral conditioning cream applied every 3 to 4 months.