Strap for Constellation Co-Axial 38 Stainless Steel / Yellow Gold Claws / Silver

The lug width of the Constellation 123.20.38.21.02.005 is 18 millimetres. This width is measured perpendicularly between the inner edges of the two lugs that attach the strap to the case. It is essential to use a strap that is exactly 18mm wide to ensure secure and proportionate fitting.

For the two-tone Constellation in gold and steel, we recommend alligator leather in dark shades (black or brown) to enhance the chromatic contrast of the case, or vegetable-tanned calf leather (cognac or tobacco) to create warm harmony with the yellow gold. FKM rubber represents the most versatile alternative for daily wear.

To change the strap on your Constellation 123.20.38.21.02.005, use a spring bar tool to remove the two metal bars that attach the strap to the lugs. Gently push the bar from the opposite side until it is released from the groove, then remove the old strap and insert the new one, ensuring that the bars are fully inserted into their respective grooves.

Yes, any strap with an 18mm lug width is compatible with your Constellation. Ensure that the strap is crafted with artisanal quality (alligator, calf leather or premium rubber) to maintain the aesthetic and functional standard of your watch. Milano Straps are specifically selected for this compatibility.

A quality leather strap (alligator or vegetable-tanned calf) has an average lifespan of 3-5 years with moderate daily use, developing a natural patina over time. Durability depends on UV exposure, humidity and frequency of use. Milano Straps artisanal straps are supplied with an 18-month warranty and can be restored at the Casati Milano atelier to extend their useful life.