Strap for Constellation Co-Axial 38 Stainless Steel / Silver Slik

The lug width is 20mm. This measurement is standard for straps compatible with the 123.10.38.21.02.002 model and can be easily verified by measuring the distance between the two attachment pins on the case, at the midpoint of the watch.

It depends on usage and personal preference. For a classic look, we recommend black or dark brown alligator with a steel deployant clasp, which maintains the elegance of the Constellation. For everyday versatility, vegetable-tanned calf leather offers greater durability and develops a natural patina over time. Sport models also pair well with natural rubber or NATO straps, which emphasize the functional side of the instrument.

Using a spring bar tool, you can gently remove the attachment pins from the 6 o'clock side. It is recommended to work on a soft surface to avoid scratching the case. If you lack experience, contact the Casati Milano atelier for accurate strap replacement, without risk to the lugs and crystal.

Yes, absolutely. Any strap with a 20mm lug width is compatible. On milanostraps.it you will find a selection of artisanal straps specifically designed for the 20mm width, available in fine leathers and customizable for color, finishes and initials. The Casati Milano atelier also offers bespoke manufacturing services with personal choice of leathers.

Durability depends on the quality of the leather, usage and maintenance. A quality alligator strap with vegetable tanning can last 5-7 years of daily wear before requiring replacement. Vegetable-tanned calf leather has similar durability, while natural rubber straps resist 3-4 years before losing elasticity. The warranty offered by milanostraps.it and Casati Milano is 18 months on all artisanally crafted straps.