A. Lange & Söhne · Saxonia

Strap for Datograph Yellow Gold

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter39 mm
Reference403.041
FamilySaxonia
MovementA. Lange & Söhne caliber L951.1 Hours, Minutes, Small Seconds | Big Date | Chronograph, Column wheel, Flyback
CaseYellow 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 403.041

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Saxonia 403.041, seen from the bench

The Saxonia reference 403.041 is equipped with the in-house caliber L951.1 that integrates chronograph functions with a column-wheel and flyback. The complications include hours, minutes, small seconds, big date, and chronograph. The watch features 20mm lug width for the strap.

Frequently asked questions

What is the correct lug width for the A. Lange & Söhne Saxonia 403.041?

The lug width of the Saxonia 403.041 is 20 millimetres. This measurement is critical: a strap with an 18 or 22mm lug width will not fit correctly. To verify, use a calliper and measure the distance between the lateral attachment lugs of the case without forcing. On the 403.041, the 20mm width ensures visual harmony between the watch case and strap.

Which strap should be paired with the Saxonia 403.041 in yellow gold?

For a yellow gold Saxonia, alligator remains the historical choice: its geometric grain and sober lustre enhance without competing with the metal. Valid alternatives include vegetable-tanned calf (which develops patina over time), shell cordovan (which offers initial stiffness transformed into softness), and natural leather in deep brown. Chromatically, mahogany brown, burgundy, formal black, or natural leather are the recommended tones.

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

Strap replacement requires specific tools: a small screwdriver or, preferably, a spring bar removal tool. Position the watch on a soft cloth to prevent scratches, identify the direction of spring bar removal (outward from the case), insert the tool gently, and remove the old strap. Insert the new one in the opposite direction. If you are inexperienced, entrust the operation to a qualified watchmaker to avoid case damage.

Is there an aftermarket strap compatible with the 403.041?

Yes. Any strap with a 20mm lug width is compatible with the 403.041. Custom artisanal straps, such as those from Casati Milano, can be made to measure in various leathers (alligator, calf, cordovan) and colours. Online you will find standard 20mm strap catalogues from recognised brands; quality varies significantly, so verify reviews and tanning certifications.

How long does a leather strap last on a 39mm watch?

The lifespan of a leather strap depends on tanning quality, use, and care. A high-quality alligator or calf strap worn daily lasts 3–5 years. Shell cordovan, with its density, can resist 7–10 years. Wear manifests with the breaking of the internal backing (the sub-stitch), rarely of the leather itself. Regular maintenance—avoiding prolonged moisture, cleaning with a dry cloth, allowing complete drying—significantly extends the useful life 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