Strap for Constellation Co-Axial 35 Red Gold / Diamond / Silver

The Omega Constellation reference 123.55.35.20.52.003 features a lug width of 18 millimetres. This dimension is measured vertically between the two terminals of the case where the strap attaches. To verify it, position a caliper on the case at the attachment points of the original bracelet.

To enhance the 18k rose gold of the Constellation 123.55.35.20.52.003, we recommend alligator in dark brown or cognac tones, or calf leather with vegetable tanning that develops a natural patina over time. Both create a discreet contrast without competing chromatically with the precious metal. Avoid light leathers or overly pronounced grain.

Remove the original bracelet using a spring bar remover (a thin, pointed tool). Insert the tip into the lateral slot of the spring terminal to release it from the case lugs. Next, insert the new strap in the same way, ensuring that the terminals are fully inserted and the spring is securely fixed on both sides.

Yes, perfectly compatible. The Constellation 123.55.35.20.52.003 accepts any strap with an 18mm lug width. Milano Straps artisanal straps are specifically tested for this reference and available in numerous finishes: alligator, shell cordovan, vegetable-tanned calf, structured rubber, and heavyweight cotton NATO.

Durability depends on the material and usage. An alligator or shell cordovan strap, worn daily but not in extreme environments (salt water, constant humidity), maintains structural and aesthetic integrity for 4-6 years. Vegetable-tanned calf develops patina after 2-3 years, making it even more appealing. Casati Milano offers an 18-month warranty and maintenance services.