Rolex
Lady-Datejust 279178-0013— lug 14mm

The Rolex Lady-Datejust 279178-0013 features a 28mm case with a lug width of 14mm. This measurement should be taken between the inner walls of the lugs using a digital calliper to ensure a precise fit when fitting a replacement strap.

For an 18-carat yellow gold case, a vegetable-tanned alligator strap in cognac or deep bordeaux tones is the most formally coherent choice. Box calf leather in a polished finish offers a more versatile option for daily wear. Both must be cut to exactly 14mm to fit the model's lugs correctly.

Strap replacement requires a fine-tipped springbar tool to release the spring bars securing the strap within the lugs. Given the narrow 14mm lug width, it is advisable to work on a soft watch cushion using precision tools to avoid scratching the gold case. Casati Milano also offers in-atelier fitting by appointment.

Yes. Any strap with a 14mm attachment and standard spring bars is technically compatible. Milano Straps offers a selection of handcrafted 14mm straps in various materials — alligator, calf leather, shell cordovan, rubber — with finished edges designed to sit flush against gold cases without creating lateral play or undue tension.

Longevity depends on the material and conditions of use. A quality vegetable-tanned alligator strap, worn regularly but not in sporting contexts, typically lasts between 2 and 4 years before patina transitions into structural wear. Shell cordovan tends to last longer due to the density of its fibres. Frequent exposure to water or perspiration significantly reduces lifespan; in such cases, alternating with a rubber strap is recommended.