Strap for Constellation Co-Axial 38 Day-Date Yellow Gold / Silver

The lug width of this Constellation is 18 millimeters. This dimension historically characterizes timepieces of medium proportions and requires proportionate straps to maintain visual balance and wrist comfort. Always verify with a digital caliper the distance between the case lugs to ensure exact mechanical compatibility.

For a Constellation in 18-carat yellow gold, alligator represents the most aristocratic choice: the texture of natural grain mirrors the geometric order of the case, and the patina that develops over time creates a visual conversation with the gold's oxidation. An excellent alternative is shell cordovan with its intrinsic luster and tonality that evolves from dark brown to burgundy, or Italian vegetable-tanned calf for those who prefer robust material and marked tactile history.

The Constellation's integrated bracelet is soldered directly to the case, therefore aftermarket straps attach via the lateral lugs of the case, measuring 18mm in width. Use a spring bar tool to gently remove the elastic pins that secure the previous strap, insert the new strap ends into the case slots, and verify that the strap is aligned orthogonally. If you prefer professional service, contact Casati Milano atelier for installation and personalized advice.

Yes, there are numerous aftermarket straps compatible with 18mm lug width. Online you will find options in alligator, shell cordovan, calf, cotton, rubber, structured silk and NATO. Ensure that the chosen strap is explicitly compatible with 18mm and that the <a href="/pages/termine-glossario/deployante">deployante</a> (buckle) is capable of supporting the case diameter. For guaranteed compatibility and aesthetic customization, Milano Straps offers a collection dedicated to 18mm straps with customization options.

The lifespan of a leather strap depends on the type of tanning, frequency of use, and climatic conditions. An alligator or calf with vegetable tanning, used daily, maintains structural integrity for 2-3 years before requiring replacement for aesthetic rather than functional reasons. Shell cordovan, being denser, can last 3-5 years. Exposure to water, perspiration, and humidity accelerates aging. Casati Milano atelier guarantees 18 months on bespoke straps, with the possibility of early replacement if deterioration is anomalous.