Strap for Constellation Co-Axial 31 Yellow Gold / Diamond / MOP Supernova

The lug width of this model is 16 millimetres. This measurement represents the distance between the axes of the holes where the strap is inserted into the case lugs. It is essential to verify this measurement with precision before purchasing an aftermarket strap, as even a 1-2 millimetre difference can cause visual misalignment and mechanical stress on the case.

For this ladies' model in yellow gold and mother-of-pearl, African alligator with natural tanning represents the classic choice: the three-dimensional grain dialogues elegantly with the iridescent mother-of-pearl. Vegetable-tanned calf offers contemporary versatility with noble aging over time. For maximum formality, a pearl grey alligator or dark brown calf are ideal options.

The strap is replaced using a dedicated tool (spring bar tool) to compress the elastic pins that secure the strap to the lugs. Release one of the two spring bars, remove the old strap, insert the new one by aligning it with the lug holes, and reposition the spring bar until it clicks firmly into place. If you lack experience, entrust the task to a professional watchmaker to avoid damage to the gold lugs.

Any strap with an exact lug width of 16 millimetres is compatible with this model. On milanostraps.it you will find a dedicated selection of 16mm straps in alligator, calf, shell cordovan and rubber, all customizable in length, initials and stitching thread colour to ensure a perfect fit to your wrist.

A quality artisanal leather strap, with vegetable tanning or authentic alligator, has an average lifespan of 3-5 years with daily use, extendable to 7-10 years if properly maintained. Durability depends on exposure to moisture, sweat and chemical agents. Controlled aging develops characteristic patina and leather ennobling, without compromising the structural integrity of the strap itself.