Strap for Lady-Datejust 28 White Gold - Diamond / President / Silver - Roman

The Rolex Lady-Datejust 279139RBR-0007 has a lug width of 14mm. This measurement is determined by the 28mm case diameter and can be verified using a digital calliper to measure the internal distance between the two lugs at the base of the case.

For an 18-carat white gold case set with diamonds, the most suitable materials are square-scale alligator in cool tones (ice, midnight blue) or shell cordovan, which develops a distinguished natural patina. The optimal taper is from 14mm to 10-12mm, with a white gold buckle or deployant clasp to maintain aesthetic coherence.

The strap is removed using a 0.9mm springbar tool, acting on the spring bars that connect the strap to the lugs. It is advisable to work on a soft surface to protect the white gold case, and to entrust the operation to an experienced watchmaker if attempting for the first time.

Yes, all straps with a 14mm attachment and standard spring bars are compatible. Milanostraps.it offers a selection of handcrafted bespoke and ready-to-wear straps specifically for 14mm lugs, made from fine leathers with full personalisation available through the Casati Milano atelier.

Longevity depends on material and usage. A quality alligator strap, with regular maintenance (conditioning cream every 3-4 months, protection from water and perspiration), retains structural integrity and appearance for 3-5 years. Shell cordovan, owing to the density of its fibres, tends to last longer, developing patina rather than deteriorating.