Strap for Grande Arkade White Gold - Diamond / Blue / Bracelet

The lug width (spring bar distance) of the A. Lange & Söhne Arkade 812.029 is 18 millimetres. This measurement represents the span between the two pins anchoring the strap to the case—a standard specification for dress watches in this 38mm diameter category. Always verify by measuring directly between the pins using a digital calliper.

For a 18-carat white gold case like the 812.029, we recommend grey pearl alligator, polished black calf, or shell cordovan in mahogany brown tonality. Selection depends on your aesthetic intention: tonal continuity with alligator, formal contrast via black calf, noble chromatic evolution through vegetable-tanned shell cordovan. Casati Milano personalises the choice during atelier consultation, considering your specific dial and case patina.

The Arkade's strap attaches via standard 18mm spring bars seated into case lugs. Using a spring bar tool, depress both lateral springs to remove the existing strap; position the new strap by aligning its lug holes with the case pins, then reinsert the spring bars until both click securely. If uncertain, entrust the operation to an artisan: Casati Milano performs this service for externally-sourced straps as well.

Yes—any strap specified for 18mm lug width is physically compatible with the Arkade 812.029. However, physical compatibility does not guarantee stylistic coherence. We recommend selecting materials and finishes (alligatore, calf, vegetable-tanned shell cordovan) that respect the constructive severity of the watch and its white gold case. The 18mm straps available on milanostraps.it are curated specifically for this case category.

A quality leather strap (alligator, calf, shell cordovan), with ordinary maintenance, retains functionality and aesthetic appeal for 3–5 years of regular wear. Longevity depends on ambient humidity, frequency of use, and storage conditions: avoid prolonged direct sunlight and excessively dry environments. Vegetable-tanned shell cordovan ages more nobly than most materials, developing character patina and increasing rigidity. Casati Milano provides 18-month warranty against manufacturing defects, not natural wear.