Rolex · Lady-Datejust
Strap for Rolex Lady-Datejust 279173
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, seen from the bench
Frequently asked questions
What is the lug width of the Rolex Lady-Datejust 279173?
The Rolex Lady-Datejust 279173 has a lug width of 14mm. This measurement is taken with a calliper between the inner faces of the two lugs, at their narrowest point. It is a dimension specific to the 28mm case and is not interchangeable with the 18mm or 20mm straps used on other Datejust references.
What is the best strap for the Rolex Lady-Datejust 279173?
For the Lady-Datejust 279173 in yellow Rolesor, an alligator strap with symmetrical Louisiana grain is the most coherent choice with the calibre of the watch: it complements the yellow gold and the Fluted bezel. Alternatively, vegetable-tanned calfskin develops a natural patina over time. For intensive daily wear, vulcanised rubber offers durability and practicality without aesthetic compromise.
How do you change the strap on a Rolex Lady-Datejust 279173?
To replace the strap on the Lady-Datejust 279173, a lever-type or push-pin spring bar tool is required to release the 14mm spring bars securing the strap to the lugs. Care must be taken to avoid scratching the yellow gold lugs: felt or textile padding around the case is strongly recommended before operating. A qualified watchmaker can complete the swap in a matter of minutes.
Are there aftermarket straps compatible with the Rolex Lady-Datejust 279173?
Yes. Aftermarket straps compatible with the Rolex Lady-Datejust 279173 must feature a 14mm lug width and standard spring bars. Milano Straps produces handcrafted straps in 14mm specifically sized for this case, available in alligator, vegetable-tanned calf, rubber and other materials. Compatibility is determined by dimensions; the final aesthetic result depends on the build quality and precision of the strap ends.
How long does a leather strap last on the Rolex Lady-Datejust 279173?
The lifespan of a leather strap depends on the material, tanning quality and usage conditions. A quality alligator strap, vegetable-tanned and hand-finished, can last between three and five years with routine care: avoid prolonged contact with water and perspiration, and occasionally apply a natural leather conditioner. Vegetable-tanned calfskin develops a distinctive patina but is more sensitive to moisture than alligator. Regular use with appropriate maintenance significantly extends strap longevity.
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

