Nomos Glashütte · Ludwig

Strap for Ludwig Neomatik 39 175 Years Watchmaking Glashütte

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

Lug width19 mm
Case diameter39 mm
Reference250.S1
FamilyLudwig
MovementNomos Glashütte caliber DUW 3001 hours, minutes, small seconds
Year2020
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

Straps for the Ludwig 250.S1

Selected for the 19 mm lug width · workshop selection

All 19 mm straps →

The Ludwig 250.S1, seen from the bench

The Nomos Glashütte Ludwig features the DUW 3001 caliber with hour, minute and small seconds indications. The model has 19mm lugs and maintains the characteristic proportions of the collection. The in-house movement offers an adequate power reserve for daily use.

Frequently asked questions

What is the lug width of the Nomos Glashütte Ludwig 250.S1?

The Nomos Glashütte Ludwig 250.S1 features a lug width of 19 mm, a deliberately chosen specification that maintains harmonic proportions with the 38.5 mm case diameter. This rare measurement requires precise calibration during strap selection. Measurement must be undertaken at the widest point of the lug, positioning the caliper orthogonally for construction accuracy.

What is the best strap for the Nomos Glashütte Ludwig 250.S1?

Strap selection depends on usage context and aesthetic sensibility. For formal settings, an African alligator in anthracite grey or vegetable-tanned calf represents the most appropriate solutions. For versatile daily wear, a NATO strap in matte canvas or vegetable-tanned calf with natural patina development offers durability and temporal aesthetic evolution. All our straps are engineered with 19 mm lug compatibility for this specific model.

How do you change the strap on the Nomos Glashütte Ludwig 250.S1?

Strap replacement involves extraction of the spring bar (stud bar). Position the watch on a stable surface, utilise a dedicated spring bar tool to compress the internal spring mechanism, and extract laterally. Align the new strap's lug holes with the case shoulders, then reinsertion the spring bar using steady pressure. Never employ improvised implements (knives, screwdrivers) as these compromise case integrity.

Is an aftermarket 19 mm strap compatible with the 250.S1?

Yes, any strap with a 19 mm lug width is mechanically compatible with the Nomos Glashütte Ludwig 250.S1, provided leather thickness aligns with the case lug geometry. Our artisanal straps are engineered specifically for this measurement, guaranteeing construction accuracy. Original Nomos straps are not a prerequisite; quality aftermarket alternatives perform identically.

What is the typical lifespan of a leather strap on a watch like the Ludwig?

Leather strap longevity depends on usage frequency and environmental conditions. A vegetable-tanned calf strap, with moderate use (5-6 days weekly), maintains structural integrity for 3-4 years whilst developing natural patina. African alligator, owing to superior density, provides 4-5 years of service life. Prolonged exposure to humidity, direct UV radiation, and perspiration significantly reduces these estimates. Preventive maintenance—regular drying, climate-controlled storage—extends strap lifespan substantially.

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