Strap for 1815 40 Platinum / Silver

The lug width of the A. Lange & Söhne 1815 233.025 is 20mm. This measurement corresponds to the distance between the inner edges of the two metal lugs located at the bottom of the case. To verify correctly, position a rigid ruler between the attachment points and measure with precision: a compatible strap must have exactly 20mm width.

For the 233.025 in platinum, alligator remains the most coherent choice with Saxon watchmaking philosophy: its natural grain and ability to develop patina over time dialogue perfectly with the platinum case. High-quality calf leather with vegetable tanning is the ideal alternative for those preferring more understated tones and a strap that ages elegantly. Shell cordovan represents the most durable solution for intensive use.

To change the strap, obtain a dedicated spring bar removal tool (the small springs located in the lugs). Position the watch with the platinum case facing downwards, apply light and consistent pressure on the end of the spring bar until it retracts slightly, then extract the strap. Repeat on the other side. Never use screwdrivers or pointed tools that could scratch the platinum. If uncertain, consult a qualified watchmaker.

Yes, an artisanal quality aftermarket strap is completely compatible with the 233.025 provided it strictly respects the 20mm lug width. Ensure the lugs are not slightly deformed and that the strap is made from durable materials (alligator, vegetable-tanned calf, shell cordovan). A well-constructed artisanal strap not only remains compatible but often enhances the daily wearing experience.

Durability depends on material and usage. High-quality alligator or shell cordovan with authentic vegetable tanning last 5-7 years in daily use, developing natural patina that increases aesthetic appeal. Aniline calf leather has similar durability. With proper maintenance — avoiding prolonged immersion and excessive humidity — strap life extends significantly. Casati Milano provides straps with an 18-month warranty against manufacturing defects.