Rolex · Lady-Datejust
Strap for Lady-Datejust 28 Rolesor Yellow Fluted / Jubilee / Champagne Diamond
Takes 14 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
The Lady-Datejust 279173-0011, seen from the bench
Frequently asked questions
What is the lug width of the Rolex Lady-Datejust 279173-0011?
The Rolex Lady-Datejust 279173-0011 has a lug width of 14mm. This measurement is specific to the 28mm case of the Lady-Datejust and should be measured with a digital calliper between the two lugs at the point where the strap attaches to the case. All replacement or aftermarket straps must have an exact 14mm attachment to ensure a correct and secure fit.
What is the best strap for the Rolex Lady-Datejust 279173-0011?
For the Lady-Datejust 279173-0011 in yellow gold and steel Rolesor, the most suitable materials are vegetable-tanned alligator leather — which develops a personal patina over time — and shell cordovan for its slim profile and compact surface. Both complement the gold bezel without overpowering the 28mm case. For more active daily wear, a vulcanised rubber strap with a yellow gold deployante or buckle offers excellent resistance and comfort.
How do you change the strap on a Rolex Lady-Datejust 279173-0011?
To replace the strap on the Lady-Datejust 279173-0011, you will need a double-tipped springbar tool: insert it between the lug and the strap to compress the spring bar and remove it safely. Given the reduced 14mm lug size, it is advisable to work on a soft watchmaker's cushion to avoid scratching the Rolesor case. Alternatively, the operation can be performed by a qualified watchmaker or at the Casati Milano atelier.
Is there an aftermarket strap compatible with the Rolex Lady-Datejust 279173-0011?
Yes. Any strap with a 14mm attachment is technically compatible with the Lady-Datejust 279173-0011. Milano Straps offers a selection of handcrafted aftermarket straps in various materials — alligator, calf leather, shell cordovan, rubber — manufactured with lengths and geometries tested on Rolex 28mm cases. It is important to ensure the strap is fitted with quality spring bars to eliminate the risk of accidental detachment.
How long does a leather strap last on the Rolex Lady-Datejust 279173-0011?
The lifespan of a leather strap depends on the material, daily care, and frequency of use. A quality vegetable-tanned alligator strap, kept away from water and treated periodically with a neutral conditioner, can last between 3 and 7 years while retaining its structural and aesthetic integrity. Shell cordovan offers superior resistance to surface wear. The Casati Milano guarantee covers manufacturing defects for 18 months, distinct from normal wear and tear.
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only

