Strap for Lady-Datejust 28 Yellow Gold Diamond / President / Green Diamond

The Rolex Lady-Datejust 279138rbr-0025 has a lug width of 14 mm. This is the standard measurement for the 28 mm Oyster case within the Lady-Datejust family. Before purchasing an aftermarket strap, it is advisable to verify the internal lug gap with a digital calliper to rule out any variation caused by previous bracelets or clasps.

For an 18-carat yellow gold case, the most suitable materials are Belly or Hornback alligator in warm tones such as cognac, bordeaux or bottle green, vegetable-tanned calf leather for those who appreciate an evolving patina, and vulcanised rubber for everyday wear. A yellow gold deployant clasp completes the pairing in a manner consistent with the case materials.

To remove the original strap or bracelet, a spring bar tool with a fine tip is required to press the spring bar within the lug channel. Care must be taken to avoid scratching the gold lugs. It is recommended to entrust the operation to a qualified watchmaker or to Casati Milano atelier for professional strap fitting.

Yes. Aftermarket straps with a 14 mm attachment and a 1.8 mm diameter spring bar are compatible with the Lady-Datejust 279138rbr-0025. Milano Straps offers a selection of 14 mm straps in various leathers and materials, handcrafted with end-piece finishing tailored to the original Rolex lugs.

Longevity depends on the material and frequency of use. A quality alligator strap, used in rotation and kept away from water, typically lasts 3 to 5 years before showing significant wear. Vegetable-tanned calf leather has a similar lifespan but develops a pleasing patina over time. Straps crafted by Casati Milano carry an 18-month warranty against manufacturing defects.