Strap for 1815 Up/Down Pink Gold

The lug width of the A. Lange & Söhne 1815 234.032 is 20 millimetres. This specification is relatively rare in contemporary luxury watchmaking. Lug width is measured from the inner shoulder of one lug to the inner shoulder of the opposite lug, at the point where the strap attaches to the case. For the 234.032, this proportion has been deliberately calibrated to maintain visual harmony between the 39 mm case diameter and the integrated lugs.

For the 234.032 in pink gold, the ideal strap is alligator leather with traditional tanning in dark shades such as natural brown, black, or burgundy. Shell cordovan in cognac colouration is a noble alternative that complements the patina development of pink gold. If you prefer vegetable tanning, calf leather with discrete aesthetic finishing and a shade offering subtle contrast to the gold—such as black or dark brown—remains an authentically artisanal choice. A deployante clasp is recommended as the closure system.

Changing the strap on the 234.032 requires specific tools: a spring bar removal tool and a stable work surface. Secure the watch firmly, locate the small slot at the lug (one on each side), insert the spring bar tool to depress the inner pin and the old strap will release. Remove the lug from the worn strap, insert the new strap through the lugs (ensuring the pins are correctly positioned), and verify the strap sits straight. This procedure is delicate: if you lack confidence, consult a certified watch repair specialist.

Yes, provided the aftermarket strap is specifically constructed for a 20 mm lug width. An artisanal strap from specialists such as Casati Milano, or from quality brands, guarantees full compatibility whilst maintaining manufacturing standards equal to the refinement of the watch. Avoid generic budget straps: you risk compromising the constructive elegance of the 234.032 and they may not guarantee stability and longevity over time.

The lifespan of a leather strap depends on the tanning method, material, and usage. A quality alligator or shell cordovan strap, with ordinary maintenance and moderate wear (not daily summer use on perspiring wrist), typically lasts 3–5 years. Calf leather with vegetable tanning, being more delicate, may have similar or slightly shorter longevity. Rotating between multiple straps extends the life of each one. Casati Milano guarantees 18 months against manufacturing defects, and offers restoration services (buckle replacement, grain restoration) to extend the useful life of your strap.