Strap for Constellation Master Chronometer 39 Sedna / Silver / Bracelet

The lug width of the Constellation 131.50.39.20.02.001 is 24 mm. This measurement indicates the internal distance between the two case attachments and determines compatibility with aftermarket straps. It is essential to measure precisely using a caliper, positioning it perpendicularly to the case diameter.

For the Constellation 131.50.39.20.02.001 in Sedna Gold, quality alligator represents the classic choice, as the structured grain dialogues elegantly with the guilloché dial and the warm patina of rose gold. Alternatively, shell cordovan offers exceptional robustness and develops a deep patina over time. For formal evening occasions, polished black calf amplifies the visual contrast.

Strap replacement requires the removal of the lug pins (spring bars). Position the watch on a soft surface, use a dedicated tool to lift the small metal spring that secures the pin, then extract the pin itself. Repeat the operation on the second side. Installation of the new strap follows the reverse procedure. If inexperienced, entrust the task to a professional watchmaker.

Any strap made for 24 mm lug width is compatible with the Constellation 131.50.39.20.02.001, provided the construction is robust and the lugs are proportioned. Choose certified quality materials: alligator, vegetable-tanned calf, shell cordovan, vulcanized rubber. At Milano Straps you will find a curated selection of customizable 24mm straps.

A quality leather strap, subject to ordinary maintenance (protection from excessive water, regular drying), lasts an average of 5-7 years with daily use. Shell cordovan, thanks to its density, can exceed even 10 years. Vegetable tanning develops characteristic patina over the years, aesthetically improving the appearance. Casati Milano guarantees 18 months on its made-to-measure straps.