Strap for Constellation Co-Axial 38 Yellow Gold / Diamond / Silver

The lug width of the Constellation 123.55.38.21.52.008 is 20mm, determined by the proportion of the 38mm case. To verify this measurement, remove the original bracelet and measure the distance between the two lugs that connect the strap to the case: it must be exactly 20mm. Even a deviation of 0.5mm would result in a strap that does not fit perfectly.

For the Constellation 123.55.38.21.52.008 in yellow gold, alligator is the most stylistically coherent choice: the regular scale texture creates formal elegance without ostentation. Alternatively, vegetable-tanned calf is extremely versatile and ages beautifully, while shell cordovan offers a slow and conscious transformation of the watch over time. Avoid fabrics or nylon, which would diminish the investment in yellow gold.

The Constellation 123.55.38.21.52.008 features an integrated bracelet as standard. If you still want a replacement strap, the spring bars are removed by pushing a plunger inward on the case lug. We recommend having this operation performed by an experienced craftsman: the 20mm requires precision in positioning to avoid damage to the yellow gold finish.

Yes, any strap equipped with a 20mm lug width is compatible with the Constellation 123.55.38.21.52.008. We recommend choosing artisanal brands that guarantee precise tolerances: even a minimal variation can result in irregular positioning on the case lug. Milano Straps offers customizable 20mm straps that conform to this model's specifications.

The durability of a leather strap depends on the material and usage. Alligator lasts 3-5 years with daily wear; vegetable-tanned calf, being softer, lasts 2-4 years but ages beautifully; shell cordovan can last 5-7 years thanks to its density. Proper maintenance (avoiding prolonged exposure to water and direct sunlight) significantly extends the strap's lifespan.