Strap for Senator Excellence Panorama Date Moonphase Stainless Steel / Silver / Alligator - Folding

The Glashütte Original Senator 1-36-04-05-02-31 features a 21mm lug width. This measurement is standard for the 42mm model and is essential when selecting compatible aftermarket straps. To verify, measure the internal distance between the lug shoulders with a digital calliper: it must be exactly 21mm.

For the Senator 42mm, we recommend American alligator for a classical and elegant aesthetic, or vegetable-tanned calf leather for a more robust choice that develops character over time. For sporty configurations, preshrunk NATO fabric or FKM rubber in black offer superior comfort and minimal maintenance. Shell cordovan is not recommended due to excessive initial stiffness.

The Senator uses a standard 21mm spring bar inserted into the lug shoulders. Use a dedicated spring bar tool or a blunt knife to compress the spring bar, extract it from one terminal hole, then remove the old strap. Insert the new strap into the lug shoulder, compress the bar, and snap the spring into both holes: the strap must remain secure without parasitic movement.

No, only straps explicitly manufactured for 21mm lug width are compatible. The width must be precise: 20mm will leave an empty gap in the lug seat, 22mm will not fit at all. Always verify that the vendor clearly specifies "21mm" in the technical description.

An alligator or vegetable-tanned calf strap, with regular maintenance, typically lasts 3–4 years of daily wear. Durability depends on sun exposure, humidity, and frequency of use. A natural patina develops after 6–8 months. To extend lifespan, occasionally apply natural leather oil (mink oil) and store the strap in a dry environment.