Glashütte Original · Senator

Strap for Senator Panorama Date Moon Phase Stainless Steel / Silver / Alligator / Folding

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
Reference100-04-32-12-50
FamilySenator
MovementGlashütte Original caliber 100-04 Hours, Minutes, Seconds | Big Date | Moonphase
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 Senator 100-04-32-12-50

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Senator 100-04-32-12-50, seen from the bench

The Glashütte Original Senator 100-04-32-12-50 represents contemporary German watchmaking from Dresden. This model features a 40mm stainless steel case with a 20mm lug width and houses the Glashütte Original 100-04 manufacture movement. The caliber displays hours, minutes, seconds in a subdial, large date window, and moon phase indication, with characteristic Glashütte Stripes visible through the transparent caseback. The Senator family evolved from designs originating in the 1950s, embodying balanced proportions and functional construction principles.

Frequently asked questions

What is the exact lug width of the Glashütte Original Senator 100-04-32-12-50?

The lug width of the Glashütte Original Senator 100-04-32-12-50 is precisely 20mm. This measurement represents the internal shoulder span between the two sides of the integrated lug and must be verified with a digital calliper to ensure complete compatibility with aftermarket straps. All straps in Milano Straps' 20mm collection are certified compatible with this specification.

What is the best strap for the Glashütte Original Senator 100-04-32-12-50?

The optimal strap depends on intended usage. For formal and professional contexts, we recommend high-grade alligator with natural patina or vegetable-tanned calf leather, which amplify the aesthetic authority of the movement. For greater daily versatility, a woven NATO strap in charcoal grey or a vulcanised rubber strap offer comfort and wear resistance. Your choice should reflect your personal style and environment of use.

How do I change the strap on the Glashütte Original Senator 100-04-32-12-50?

Changing the strap on the Senator 100-04-32-12-50 requires a specific tool called a spring bar tool, available in various configurations. Position the watch on a soft surface, locate the spring bar pins at the lug ends, apply gentle downward pressure with the spring bar tool to release the pins, then rotate the strap out of the lug. Insert the new strap by aligning the holes with the spring bar pins, press until you feel the securing click. If you are inexperienced, our Milano Straps team can assist via online consultation.

Is an aftermarket 20mm strap fully compatible with the Glashütte Original Senator 100-04-32-12-50?

Yes, any strap with a certified 20mm lug width is mechanically compatible with the integrated lug of the Senator 100-04-32-12-50. However, aesthetic compatibility depends on your colour preferences and material choice. We recommend considering the dial tone, steel colour and your personal style. Milano Straps offers free consultation to identify the optimal pairing for your model.

How long does a leather strap last on the Glashütte Original Senator 100-04-32-12-50?

The lifespan of a leather strap varies according to material and usage patterns. High-quality alligator or vegetable-tanned calf leather can last 3-5 years with moderate daily use, whilst developing a fascinating patina over time. Factors such as sun exposure, humidity and frequency of wear influence longevity. A rubber or NATO strap offers greater durability, lasting up to 7-10 years. Periodic strap replacement is part of the routine maintenance of any fine timepiece.

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