Glashütte Original · Senator

Strap for Senator Excellence Perpetual Calendar White Gold / Black-Skeleton/ Alligator / 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
Reference1-36-02-03-04-30
FamilySenator
MovementGlashütte Original caliber 36-02 hours, minutes, seconds | big date, day, leap year, month, perpetual calendar | moonphase
Year2018
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 1-36-02-03-04-30

Selected for the 21 mm lug width · workshop selection

All 21 mm straps →

The Senator 1-36-02-03-04-30, seen from the bench

The Senator reference 1-36-02-03-04-30 is equipped with the Glashütte Original caliber 36-02 with perpetual calendar, big date, day, month, leap year and moon phase indications. The watch features 21mm lugs and integrates hour, minute and second functions as well as the calendar complications. The movement offers the complete perpetual calendar display with moon phase indicator.

Frequently asked questions

What is the lug width of the Glashütte Original Senator 1-36-02-03-04-30?

The Glashütte Original Senator 1-36-02-03-04-30 features a lug width of 21mm. This measurement is defined as the distance between the spring bar pins and represents a precise technical specification for the 42mm case. It is essential to verify this measurement when purchasing an aftermarket strap, as 20mm or 22mm straps will not fit correctly.

Which strap is recommended for the Senator 1-36-02-03-04-30?

Several options are recommended depending on intended use: (1) alligator leather with vegetable tanning for formal and ceremonial settings; (2) superior quality calf leather for daily wear with evolving patina; (3) vulcanised rubber for technical environments and humidity exposure; (4) NATO strap in high-density fabric for a more casual yet structurally robust approach. Selection depends on context and personal aesthetic preference.

How to correctly change the strap on the Senator?

To change the Senator strap: (1) position the watch with dial facing up and the lug facing towards you; (2) use a spring bar tool (specialised implement with two flat ends) to gently press the pin from the internal side of the lug, lifting it slightly; (3) extract the old strap by removing the pin from the slot; (4) insert the new strap by entering the pin into the slot and releasing spring bar tool pressure. Execute with care to avoid scratching the case.

Can I use an aftermarket strap compatible with the Senator?

Yes, it is possible to use high-quality aftermarket straps provided they comply with the 21mm lug width specification. Milano Straps offers a selection of handcrafted leather straps (alligator, calf, shell cordovan), NATO and rubber, specifically compatible with the Senator 42. Construction quality and artisanal finishes guarantee harmonious transition with the stainless steel case and structural longevity comparable to the original strap.

What is the expected lifespan of a leather strap for the Senator?

A superior quality leather strap (vegetable-tanned alligator, premium calf) provides 8-12 years of daily-use durability with periodic maintenance (cleaning, occasional neutral balm application). Longevity depends on usage frequency, humidity and perspiration exposure, and maintenance performed. A NATO strap in high-density fabric may last 10-15 years if properly stored. A vulcanised rubber strap provides 12-18 years before elastic properties begin to diminish.

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