A. Lange & Söhne · Saxonia

Strap for Saxonia White Gold - Diamond / MOP

Takes 19 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width19 mm
Case diameter37 mm
Reference840.029
FamilySaxonia
MovementA. Lange & Söhne caliber L086.4
Year2012
CaseWhite Gold

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Saxonia 840.029

Selected for the 19 mm lug width · workshop selection

All 19 mm straps →

The Saxonia 840.029, seen from the bench

The Saxonia represents A. Lange & Söhne's three-hand watch collection, characterized by clean lines and a minimalist dial. It is powered by the in-house manual-winding caliber L086.4 with a 72-hour power reserve. The lugs measure 19mm in width.

Frequently asked questions

What is the lug width of the A. Lange & Söhne Saxonia 840.029?

The lug width of the Saxonia 840.029 is exactly 19 millimetres. This is the physical distance between the lug pins on the case, and any compatible strap must match this measurement precisely. To verify, use a digital calliper positioned between the two metal pins protruding from the case.

Which strap material is best suited for the Saxonia 840.029 in white gold?

For a white gold Saxonia, we recommend cognac-brown alligator for aristocratic elegance, burgundy shell cordovan for noble patina development over time, or vegetable-tanned calf leather for construction authenticity. If you prefer versatility, a cotton NATO or vulcanised rubber strap offers contemporary alternatives without compromising the watch's classical identity.

How do you replace the strap on an A. Lange & Söhne Saxonia 840.029?

Replacement requires delicacy. Use a spring bar tool (two-pronged instrument) to lift the small metal pin that fastens the strap to the case lugs. Press the pin inward, remove the old strap, and insert the new one by aligning the hole with the lug. Ensure the pin is fully inserted and clicks into position. If you lack confidence, entrust the task to a qualified watchmaker.

Can I use an aftermarket strap on this Saxonia? What are the risks?

Yes, provided it is 19mm lug width. Risks stem from construction quality: a poorly made strap with fragile stitching or low-grade leather does not reflect the watch's value and compromises long-term security. Choose reputable suppliers who verify compatibility and durability. Artisanal straps in alligator, shell cordovan, or vegetable-tanned leather are the recommended standard.

How long does a leather strap last on a watch like the Saxonia 840.029?

Lifespan depends on material and usage. Premium alligator can last 8–10 years with proper maintenance. Shell cordovan, thanks to its dense fibrous structure, reaches 10–15 years whilst developing a fascinating patina. Vegetable-tanned calf requires greater care and typically lasts 5–7 years. Vulcanised rubber strap has similar longevity to calf. The decisive factor is care: avoid excessive moisture, prolonged direct sunlight, and excessive flexing of the strap.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only