Strap for Constellation Co-Axial 38 Red Gold / Brown

The lug width of the Constellation 123.50.38.21.13.001 is exactly 20 millimetres. This measurement represents the distance between the spring bar attachment pins on the case. A compatible 20mm strap attaches without lateral play, maintaining perfect case alignment on the wrist.

For the Constellation in 18-carat rose gold, we recommend cognac-dyed alligator or caramelised browns, which harmonise elegantly with the gold alloy. Alternatively, Italian shell cordovan with aged patina offers a unique visual relationship. For everyday versatility, vegetable-tanned calf guarantees suppleness and natural ageing towards burgundy tones.

Position the watch on a soft surface with the strap side facing upward. Using a dedicated tool (or a small lever), gently press the spring bar pin from the inside to release it. Once the pin is extracted, the old strap slides away. Insert the new 20mm strap and reinsert the pin until it clicks. Verify that the lug is secure on both sides.

Yes, any strap with a 20mm lug width is compatible with the Constellation 123.50.38.21.13.001. Always verify the internal width between the pins before purchase. Artisanal quality straps, made from fine leather with steel or gold fittings, do not diminish the watch's value if constructed to elevated building standards.

An artisanal quality leather strap, such as alligator or Italian shell cordovan, typically lasts 3–5 years with daily wear, depending on maintenance and exposure to moisture and sunlight. Vegetable-tanned leather tends to last slightly less (2–4 years). Caring for the strap with leather-specific creams and protecting it from excessive moisture significantly extends its longevity.