Strap for Saxonia Big Date Yellow Gold / Champagne

The A. Lange & Söhne Saxonia 105.021 features a lug width (ansa) of 18 mm. This measurement represents the distance between the two lugs on the case and is essential for selecting a compatible strap. Measure with a caliper or flexible ruler positioned inside the two lugs. At 18 mm, the strap sits securely whilst maintaining ideal proportions relative to the case diameter of 33.90 mm.

Genuine alligator is the historically appropriate choice for the Saxonia: its faceted grain complements the yellow gold beautifully, and the thin leather ensures ideal wearability. Alternative materials include vegetable-tanned calf, which develops noble patina, or shell cordovan for rich ageing. For formal occasions, choose alligator in teak brown or black; for contemporary elegance, consider grey calf or aged cognac. All options should be 18 mm width.

Strap replacement requires care to avoid damaging the yellow gold case. Use a spring bar tool, positioning it beneath the strap bar connecting the strap to the lug. Push inward to release the bar, then remove it from one side and extract the strap. To install a new 18 mm strap, thread the bar through both strap holes and insert into the case lugs, ensuring secure seating. If uncertain, Casati Milano provides professional strap change service by appointment.

Any strap with an 18 mm lug width is compatible with the Saxonia 105.021, provided it is crafted from materials consistent with the watch's character. Recommended options include alligator, calf leather, shell cordovan, or structured cotton. Milanostraps.it offers a curated selection of 18 mm artisan straps in various finishes. For bespoke service and personal leather selection in Milan, contact Casati Milano by appointment.

Lifespan depends on material quality and wear patterns. Premium alligator or calf, worn daily, maintains structural integrity for 3–5 years; vegetable-tanned shell cordovan may last 7–8 years owing to its natural density. Ageing enhances aesthetics, developing richer patina and colour. Casati Milano provides an 18-month warranty against manufacturing defects. Longevity is influenced by maintenance: avoid prolonged moisture exposure and apply leather-specific treatments periodically.