Strap for Constellation Co-Axial 31 Red Gold / MOP

The lug width of this 31mm Constellation is exactly 20mm. It is measured from the inside to the inside of the lug holder in the seat between the lugs of the case. This dimension is fundamental for selecting the correct strap without errors.

Cognac alligator or vegetable-tanned calf are the most balanced choices, as they naturally complement the guilloché dial and the warm reflections of rose gold. For formal wear, black alligator ensures maximum contrast. For everyday use, structured rubber offers practicality without aesthetic compromise.

The process requires a specific spring bar tool. Gently insert the tool tip into the slot of the case lug holder, compressing the internal spring of the pin, and extract the strap from its seat. When unsure of the procedure, consult a specialized watchmaker or the Casati Milano atelier to avoid damage to the lugs.

Yes, all straps with a 20mm lug width are compatible with the Constellation 123.50.31.20.55.001. MilanoStraps offers a wide selection of materials – alligator, calf, shell cordovan, rubber – customizable in sizes, initials and stitching thread, with fast shipping.

Durability depends on the material and usage. High-quality alligator, with artisanal tanning, lasts 3-4 years with moderate use. Vegetable-tanned calf evolves over time and lasts 2-3 years before requiring replacement. Rubber has superior longevity, approximately 5-6 years. Casati Milano guarantees 18 months on all bespoke straps produced.