Strap for Constellation Co-Axial 38 Red Gold / Silver

The lug width of the Constellation 123.50.38.21.02.001 is exactly 20mm. This is the specific standard for the 38.00mm case. Always measure between the inner spring bar seats to verify compatibility before purchasing an aftermarket strap.

For the Constellation in Red Gold we recommend dark brown or tobacco alligator (tonal pairing), burgundy shell cordovan (classic elegance), or vegetable-tanned honey-aged calf leather (modern appeal). Avoid synthetic materials or light colors: Red Gold requires robust materials and warm tones for aesthetic coherence.

The Constellation features straight-through spring bars. Remove the old strap by pushing the bars from the opposite side using a specialized spring bar tool. Insert the new bars into the 20mm strap and lock them into the case. Be careful not to force them to avoid damage to the bars or case.

Yes. Any 20mm strap is compatible if built to quality standards befitting the timepiece: alligator, cordovan, calf leather, FKM rubber. On milanostraps.it you will find a selection of ready-to-ship straps and custom options through Casati Milano.

A quality leather strap (alligator, shell cordovan, vegetable-tanned calf) on a Constellation under ordinary use lasts 3-5 years. Durability depends on frequency of wear, moisture exposure, and maintenance. Vegetable tanning ages with character, while synthetic materials age without patina.