Strap for Constellation Co-Axial 38 Yellow Gold / Champagne

The Omega Constellation 123.50.38.21.08.001 has a lug width of 20mm. This is the internal width of the space between the two lugs where the strap is inserted. To verify with certainty, we recommend measuring with a digital caliper between the right and left internal holes of the case, excluding the outer shoulders.

For a Constellation 123.50.38.21.08.001 in yellow gold, cognac alligator is the most coherent choice: the regular scale grain pairs perfectly with the brilliance of gold, and the lightness of the leather does not burden the case. Valid alternatives are dark blue calf (for sophisticated contrast) or burgundy shell cordovan (to develop a historical patina over time).

The strap is changed by removing the lugs from the case using a dedicated tool (spring-loaded removable lugs). Position the watch with the case facing upward, gently press the lug spring with a thin tool to release the pin, and slide the lug out of the 20mm space. Insert the new strap by aligning it with the case shoulders and reinsert the lugs until they click into place.

Yes, all 20mm artisanal straps are compatible with the Constellation 123.50.38.21.08.001, provided they are made according to international width standards. Milano Straps tests every 20mm strap to ensure a precise fit without binding. We still recommend a manual verification of the lug width on your specific watch.

A quality leather strap (alligator, calf, or shell cordovan) typically lasts 3-5 years with daily use and proper maintenance. Durability depends on frequency of use, exposure to moisture, and application of protective creams. Milano Straps guarantees 18 months on custom-made straps crafted by Casati Milano, during which we cover construction defects and premature deterioration due to material defects.