Strap for Constellation Co-Axial 38 Red Gold / Diamond / Brown

The Omega Constellation 123.55.38.21.63.001 has a lug width of 20 millimetres. This measurement is taken centre-to-centre between the holes on the case where the strap attaches. Any aftermarket strap must respect this dimension precisely to install correctly without play or forcing.

For a rose gold 18kt Constellation of this calibre, alligator is the most natural choice: the fine grain texture of alligator complements perfectly the guilloché surface of the dial. Alternatively, burgundy or cognac calf creates refined colour combinations, whilst shell cordovan offers durability and a patina that evolves over time. For formal occasions, glossy black ensures timeless elegance.

The Constellation 123.55.38.21.63.001 is fitted with a standard strap with 20mm lugs. To remove it, use a dedicated tool (spring bar tool) to push the spring bar pin from the rear, freeing the strap from the case lugs. Install the new strap by performing the reverse operation, ensuring the spring bar clicks firmly into position. If you prefer, the Casati Milano atelier offers strap change service by appointment.

Yes, any quality strap with a 20mm lug width is compatible with the Constellation 123.55.38.21.63.001. On milanostraps.it you will find a selection of 20mm straps ready for dispatch, customisable in sizes, initials and stitching type. The Casati Milano atelier also creates bespoke straps with personal choice of leathers and 18-month warranty.

The lifespan of a leather strap depends on the tannery quality, usage and care. A strap in alligator or excellent quality calf, worn regularly on a single wrist, typically lasts 4-7 years before requiring replacement. Shell cordovan is known for superior longevity, often 8-10 years. The Casati Milano atelier offers an 18-month warranty on all made-to-measure straps, with the possibility of requesting subsequent restorations.