A. Lange & Söhne
1815 323.046— lug 20mm

The lug width of the A. Lange & Söhne 1815 323.046 is 20 millimetres. This measurement is determined by the proportional architecture of the 40mm case and represents the Saxon standard for this model. The measurement must be taken between the internal points of the case lugs, excluding the spring bars themselves.

Three categories are ideal for the 323.046: American alligator for its interlocking grain that does not compete with the dial; chromium-tanned box calf for constructive solidity and chromatic versatility; shell cordovan for those seeking natural patina development over time comparable to white gold. Straps with excessive texture that conflicts with the design's sobriety are discouraged.

The strap is changed using a spring bar removal tool. Position the tool in the lug, compress the elastic spring bar inward, remove the old strap end and insert the new one. This operation requires maximum delicacy to avoid scratching the white gold case. At Casati Milano, this operation can be performed with direct consultation.

Yes, the 323.046 accepts aftermarket straps of elevated constructive quality with a lug width of 20mm (tolerance ±0.3mm). It is essential that the strap be bespoke manufactured for this specific width, not adapted from other sizes. Milano Straps offers a range of 20mm compatible straps for this case.

A leather strap of quality construction (alligator, calf, shell cordovan) with vegetable or chromium tanning lasts an average of 2–4 years with daily wear, up to 5–7 years with occasional use. Duration depends on exposure to humidity, extreme temperatures and frequency of wear. More noble leathers such as shell cordovan tend to develop character over time rather than degrade.