Glashütte Original · Senator

Strap for Senator Chronograph Panorama Date Stainless Steel / Black / Calf - Folding

Takes 21 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width21 mm
Case diameter42 mm
Reference1-37-01-03-02-55
FamilySenator
MovementGlashütte Original caliber 37-01 Hours, Minutes, Small Seconds | Big Date | Chronograph, Column wheel, Flyback | Power Reserve Indicator
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 1-37-01-03-02-55

Selected for the 21 mm lug width · workshop selection

All 21 mm straps →

The Senator 1-37-01-03-02-55, seen from the bench

The Senator features the in-house caliber 37-01 with flyback chronograph function on a column wheel and power reserve indicator. It has a big date, small seconds and 21mm lugs. The movement offers hour, minute and flyback chronograph indications.

Frequently asked questions

What is the lug width of the Glashütte Original Senator 1-37-01-03-02-55?

The lug width of the Glashütte Original Senator 1-37-01-03-02-55 is exactly 21mm. This dimension is standardised across the entire line of this model and requires a strap specifically engineered for this measurement, without approximation tolerances.

What is the best strap for the Glashütte Original Senator 1-37-01-03-02-55?

For the Senator, we recommend alligator in vegetable tanning for formal contexts, shell cordovan for an elegant-versatile approach, or vegetable-tanned calf for daily wear. NATO remains the most conservative choice. Selection depends on usage context and personal aesthetic preferences, but all these materials respect the Saxonian austerity of the model.

How do I change the strap on my Senator 1-37-01-03-02-55?

The strap is changed using a spring bar removal tool. Position the tool between the lug and strap, press gently to release the spring bar, and slide the strap out from the lugs. Reverse the procedure for installation. We recommend working on a soft surface to avoid scratching.

Is an aftermarket strap compatible with the Glashütte Original Senator 1-37-01-03-02-55?

Yes, provided the strap is engineered for exactly 21mm lug width. Straps of 20mm or 22mm will not fit the Senator's attachment seats. It is essential to verify this technical specification with the manufacturer prior to purchase.

How long does a leather strap last on a watch like the Senator 1-37-01-03-02-55?

A high-quality leather strap (alligator, shell cordovan, vegetable-tanned calf) subjected to regular use lasts approximately 3–5 years before replacement is needed. Durability depends on usage frequency, climatic conditions, and maintenance care. A leather strap is not a permanent component, but a consumable accessory that contributes to the aesthetic evolution of the watch.

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