Rolex
Lady-Datejust 279173-0020— lug 14mm

The Rolex Lady-Datejust 279173-0020 has a lug width of 14mm. This measurement must be taken internally between the two lugs using a precision calliper. Respecting this dimension is essential to ensure a correct fit and a harmonious aesthetic when fitting a replacement strap.

For the Lady-Datejust 279173-0020 in yellow Rolesor, the most suitable straps are in cognac or honey alligator — to complement the yellow gold — or in vegetable-tanned calf leather for everyday versatility. Shell cordovan is the premium choice for those seeking a patina that improves with age. All straps must have a 14mm attachment width.

To replace the strap on the Lady-Datejust 279173-0020, the 14mm spring bars securing the strap to the case lugs must be removed using a fine-tipped spring bar tool. Care should be taken not to scratch the Rolesor surfaces. It is advisable to work on a soft surface, and if in doubt, to consult a qualified watchmaker.

Yes, there are numerous high-quality aftermarket straps compatible with the Lady-Datejust 279173-0020. The essential technical requirement is a 14mm attachment width. Milano Straps offers a curated selection of artisan straps in various materials — alligator, calf leather, shell cordovan, rubber — crafted for 14mm lugs and compatible with the original Rolex buckle or an aftermarket deployant clasp.

The lifespan of a leather strap depends on material quality, frequency of use, and exposure to water and perspiration. A high-quality alligator or shell cordovan strap, with moderate daily use and proper care, can last between 2 and 5 years. Vegetable-tanned calf leather generally has a slightly shorter lifespan under intensive use. Casati Milano offers an 18-month warranty against manufacturing defects on all bespoke straps.