Strap for Constellation Co-Axial 38 Day-Date Stainless Steel / Red Gold / Diamond / Silver

The lug width of the Constellation 123.25.38.22.02.001 is 20 millimetres. This measurement, determined by the 38mm case sizing, ensures precise compatibility with specific straps without the need for adapters. To measure correctly, use a digital calliper positioned between the two centres of the case lugs, completely excluding the original bracelet.

The best strap depends on the intended use. For formal elegance, a medium brown alligator or dark brown shell cordovan amplifies the appeal of the two-tone case. For daily versatility, vegetable-tanned calf develops natural patina over time. For sportiness, a NATO strap or FKM rubber offers practicality whilst maintaining authority. The rose gold and stainless steel case allows transitions between materials without aesthetic compromise.

The strap on the Constellation 123.25.38.22.02.001 is replaced by removing the case pins on both sides of the case. Use a watchmaking spring bar tool, applying uniform pressure towards the centre to compress the internal spring and slide out the pin. Once removed, the bracelet or strap separates from the case. To install the new 20mm strap, insert the pre-compressed pin into the case holes until the stop clicks into place.

Yes, the Constellation 123.25.38.22.02.001 accepts any commercially available strap with a compatible 20mm lug width. Verify that the keeper is correctly sized and that the strap quality reflects the authority of the watch. Milano Straps offers online 20mm straps compatible with this model, customisable in leather, colour, sizes and stitching thread.

The lifespan of a leather strap depends on use, material quality and environmental conditions. A high-quality alligator or shell cordovan strap lasts 3-5 years of moderate daily use, developing desirable patina. Vegetable-tanned calf is more delicate (2-3 years) but gains accelerated character. A NATO or FKM rubber strap offers superior resistance (5+ years) but less aesthetic evolution. Milano Straps guarantees 18 months on custom straps made by the Casati Milano atelier.