Strap for Constellation Co-Axial 27 Brushed Stainless Steel / Red Gold Claws / MOP

The lug width is 20mm. This dimension is characteristic of Constellation women's models and is determined by the distance between the case attachment pins. To verify it, remove the original strap and measure with a caliper or ruler between the two holes: it should measure exactly 20mm. Confirm this measurement before ordering an aftermarket strap.

Alligator in dark shades (black, dark brown) represents the optimal choice because it enhances the mother-of-pearl dial and creates an elegant contrast with the rose gold. Vegetable-tanned calf leather is excellent if you desire a strap that develops patina over time. A military cotton NATO in beige or pearl grey maintains sporty character without visually weighing down the 27mm watch. Avoid textured rubbers, which visually burden this 27mm model.

The attachments are direct to the case, facilitating the operation. Use a spring bar tool specifically designed for watches: insert the tip into the lower lug and compress the internal spring, allowing extraction of the fixing pin. Remove the old strap, insert the pins into the new strap by positioning the lug on the case attachments, and let the spring return to its original position. The operation requires care to avoid scratching the case.

Yes, the 123.20.27.20.55.004 accepts any strap with 20mm lug width thanks to direct attachments. High-quality artisanal leather straps are fully compatible: simply ensure the width is correct and that the deployant (if desired) is suitable for the 27mm case diameter. Milano Straps offers customizable 20mm straps in premium leathers and finishes.

Durability depends on leather quality, daily use, and environmental conditions. A high-quality alligator or vegetable-tanned calf strap maintains structural integrity for 4-6 years of moderate use. Prolonged sun exposure and humidity accelerate aging. Milano Straps provides an 18-month warranty on all Casati Milano artisanal straps, and recommends periodic rotation between different straps to extend overall longevity.