A. Lange & Söhne · 1815

Strap for 1815 40 Pink Gold / Silver

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

Lug width20 mm
Case diameter40 mm
Reference233.032
Family1815
MovementA. Lange & Söhne caliber L051.1 hours, minutes, small seconds
Year2009
CaseRose 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 1815 233.032

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The 1815 233.032, seen from the bench

The A. Lange & Söhne 1815 233.032 is a 40 mm pink gold dress watch embodying German watchmaking philosophy. It features the caliber L051.1 movement with hours, minutes, small seconds, and Glashütte finishing. The case measures 40 mm in diameter with a 20 mm lug width, designed for classical proportions without excess. The silver dial and open caseback showcase the precision movement with perlage and Glashütte stripes.

Frequently asked questions

What is the lug width of the A. Lange & Söhne 1815 233.032?

The lug width of the 233.032 is 20 millimetres. Measurement is taken by positioning a digital calliper between the two metal pins (spring bars) protruding from the case. This dimension is specific to this model and results from Lange's proportional design philosophy.

What strap do you recommend for the 233.032?

For the 233.032 we recommend dark brown alligator, Tuscan leather with vegetable tanning, or cognac shell cordovan. Alligator offers fine grain and visual lightness; vegetable-tanned leather develops patina over time; shell cordovan creates subtle contrast. All require a deployant clasp in rose gold for aesthetic coherence.

How do I change the strap on the A. Lange & Söhne 1815 233.032?

The strap is changed by removing the two spring bars connecting the lugs to the case. Use a spring bar tool to apply gentle pressure on the bar mechanism, extracting them horizontally. Position the new strap and reinsert the bars until you feel the catch. Avoid hammers or improvised tools that would damage the rose gold.

Can I use an aftermarket strap of different quality than the original Lange strap?

Yes, provided the lug width is precisely 20 millimetres and the material and aesthetic quality match the watch's value. High-quality artisanal alligator, calf leather or shell cordovan does not betray the 233.032. We advise against synthetic or mediocre-quality straps that would compromise the elegance of the case.

How long does a natural leather strap last on this watch?

A natural leather strap of good quality, correctly maintained, lasts between 3 and 5 years with daily use. Shell cordovan may last longer due to fibre density. The patina that develops is desirable. Avoid direct intense sunlight, prolonged moisture and excessive twisting. Periodic maintenance (light conditioning) extends service life.

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