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

The lug width of the Constellation 123.10.38.21.02.004 is 20mm. This measurement is determined by the distance between the case suspension pins and represents a fixed constructive characteristic for this model. To verify the compatibility of an aftermarket strap, measure the distance from the inner edge of one pin to the inner edge of the other using a digital caliper.

Alligator represents the most aesthetically coherent choice: its natural and geometric grain perfectly complements the engineering precision of the case. For more robust daily use, vegetable-tanned calf offers durability and develops a natural patina over time. Shell cordovan represents an option for those seeking maximum craftsmanship, while racing rubber straps are ideal for sporting applications.

The strap is suspended by two metal pins that pass through the case lugs. Equip yourself with a spring bar tool and position it under the pin from the case side. Gently push upward to release the pin from its seat, then extract it completely. Repeat the operation from the opposite side. To install the new strap, insert the pin through the strap lugs, position it under the case lug and push until it locks definitively.

Yes, any strap with a 20mm lug width is interchangeable with the Constellation 123.10.38.21.02.004, provided that the strap has been made for this width. However, it is advisable to verify the overall length of the strap: the Constellation has specific proportions that require a balanced distribution between the upper and lower part of the strap to ensure comfortable wearing.

The lifespan of a leather strap depends on the selected material, frequency of use and maintenance. An alligator or vegetable-tanned calf strap can last between 3 and 7 years under moderate daily use conditions. Shell cordovan, due to its greater density, tends to extend this lifespan to 8-10 years. Regular maintenance, avoiding prolonged exposure to moisture and direct heat, significantly extends the longevity of the strap.