Strap for Lady-Datejust 26 Fluted Blue Diamonds Jubilee

The Rolex Lady-Datejust 179174-0011 has a lug width of 13mm, measured between the inner surfaces of the lower lugs. This is a non-standard measurement that requires straps specifically produced for this attachment, distinct from the more common 12mm or 14mm sizes.

For the Lady-Datejust 179174-0011 in its two-tone white gold and steel case, the most suitable materials are fine-grain smooth alligator, vegetable-tanned box-calf leather, and shell cordovan. Slate grey or midnight blue alligator pairs elegantly with light-coloured dials, whilst polished black complements diamond-set dials. The 13mm lug width requires bespoke production or sourcing from specialist catalogues.

To replace the strap on the Lady-Datejust 179174, the spring bars must be removed from the case lugs using a dedicated fork or pin tool. The 13mm lugs require spring bars of the corresponding length. It is advisable to work on a soft surface to protect the bezel and sapphire crystal, or to entrust the replacement to a watchmaker or the Casati Milano atelier.

Yes, aftermarket straps with a 13mm attachment are produced by specialist artisan workshops. Casati Milano crafts bespoke straps with a tapered 13mm attachment precisely fitted to the Lady-Datejust 179174-0011 case, available in alligator, calf leather, shell cordovan and other fine materials. It is essential to verify that the chosen strap strictly respects the 13mm lug width to avoid play or stress on the attachment.

The lifespan of a leather strap on a Rolex Lady-Datejust depends on the material and daily use. A quality alligator strap, with proper care and rotation, can last between three and five years. Vegetable-tanned calf develops a natural patina but is more sensitive to moisture; shell cordovan is among the most resistant to surface wear. Casati Milano straps carry an 18-month warranty against manufacturing defects. Prolonged contact with water and perspiration should be avoided to preserve the leather structure.