Strap for Museum Collection N° 9 “Milestone 1941”

The lug width of the 516.53.38.50.01.001 is 20mm, corresponding to the distance between the lateral lugs of the case. This dimension is characteristic of chronographs of this generation and requires straps specifically sized for this width. Incorrect measurement risks damaging the original case lugs.

Alligator remains the most elegant choice for the 516.53.38.50.01.001 in white gold: its fine and regular grain does not distract from the sober architecture of the case. Alternatively, vegetable-tanned calf leather offers a patina that evolves naturally over time, creating harmony with the oxidation of the precious metal. We advise against casual materials such as NATO or rubber, which would betray the collectible character of the piece.

Lug width is measured as the linear distance between the two lateral attachment points of the case, where the strap is inserted. For the 516.53.38.50.01.001, this distance is exactly 20mm. A common mistake is confusing it with the case diameter (38mm): these are two completely different measurements. We recommend using a digital caliper or contacting Casati Milano atelier directly for precise verification.

Yes, provided the strap is designed and tested specifically for the 20mm lug width. Not all strap makers have experience with this width: our online shop offers a selection of 20mm straps ready for shipment, and Casati Milano atelier creates bespoke solutions with personal consultation, WhatsApp updates and 18-month warranty.

An alligator or vegetable-tanned calf strap, handcrafted and properly maintained, lasts an average of 3-5 years of daily use before requiring replacement. Durability depends on use, climate, humidity and maintenance. A Casati Milano strap includes 18-month warranty and allows easy replacement thanks to the 20mm lug width, which is well documented and standardized.