Strap for Constellation Quartz 24 Polished Stainless Steel / Red Gold / Diamond / MOP

The lug width is exactly 18mm. This dimension is specific to the 24mm case diameter model and is calculated to maintain harmonious proportions between the compact case and the strap. Always verify with a digital caliper by measuring inside-to-inside between the spring bar holes.

Alligator remains the most coherent choice with the Constellation's feminine elegance heritage. A dark brown or black alligator strap amplifies the sophistication of the mother-of-pearl dial and complements the rose gold case. Vegetable-tanned calf is a contemporary alternative that develops a golden patina over time, ideal if you seek a warmer tone.

The Constellation 123.25.24.60.55.005 uses standard 18mm spring bars. Position the watch face down, locate the small circular holes on the sides of the case, and use a spring bar tool to compress the spring bar and remove the vintage strap. Insert the spring bar into the new 18mm strap and let it snap into position. If you are not experienced, contact Casati Milano atelier for professional installation.

All quality 18mm straps are compatible, provided they respect the tolerance of ±0.1-0.2mm. The best options are those in alligator, naturally tanned vegetable calf, and shell cordovan. Avoid rubber or NATO canvas straps as they contradict the jewel identity of the model. On milanostraps.it you will find a curated selection of 18mm straps ready for shipping and customizable.

A high-quality alligator strap lasts 5-8 years with daily use, thanks to the natural density of the leather. Vegetable-tanned calf lasts 3-5 years as it is softer and more receptive to signs of wear, but develops a fascinating patina. Shell cordovan reaches 8-10 years. Lifespan depends on climate, humidity, and frequency of use. Casati Milano atelier offers an 18-month warranty on made-to-measure straps and can regenerate vintage leathers through specialized interventions.