Strap for Senator Excellence Perpetual Calendar Red Gold / Silver / Alligator / Folding

The lug width (ansa) of the Glashütte Original Senator 1-36-02-02-05-50 is 21 millimetres. This measurement is taken internally between the attachment pins on the caseback. Accurate measurement is critical: use a digital caliper positioned on the inner side of the lugs where the strap connects. A common measurement error is measuring on the external case, which produces inaccurate results and incompatibilities with replacement straps.

For the Senator in 18-carat red gold, alligator leather with vegetable tanning is recommended: the natural grain and patina that develops over time create synergy with the colour evolution of gold. Alternatively, polished box calf offers a more formal and structured option, especially when paired with a gold deployant clasp. For summer conditions or humid environments, FKM rubber ensures durability without competing visually with the precious metal. Avoid generic synthetic straps: gold deserves materials that age with dignity.

The Senator strap is changed using a specialised pin removal tool or fine precision needle. Locate the attachment pins inside the lugs: these pins pass transversely through the strap passants. Position the pin removal tool beneath the pin and push gently inward, then extract the pin completely. Remove the old strap and insert the new one, ensuring the pins are fully inserted and the strap sits without lateral play. Never force the process: a correctly inserted pin clicks softly into place.

Yes, it is possible to use high-quality aftermarket straps compatible with the 21mm lug width on the Glashütte Original Senator. It is essential to select straps from specialised manufacturers that guarantee precise construction tolerances and materials suitable for pairing with red gold: alligator, calf, shell cordovan, or FKM rubber. A poorly toleranced aftermarket strap results in lateral play and compromises both aesthetics and security. Milanostraps.it offers a dedicated selection of 21mm straps tailored for watches in this category.

The lifespan of a leather strap depends on intensity of use and material: quality vegetable-tanned alligator offers 3–5 years of daily wear before structural deterioration (cracking, thinning) becomes visible. Box calf, more resilient, extends to 4–6 years. Determining factors include humidity exposure, perspiration, cleaning frequency, and wearing intensity. A strap preserved for occasional use maintains integrity beyond 10 years. Regular maintenance—gentle cleaning, annual conditioning with specialist creams—significantly prolongs useful life. A deteriorated strap can be regenerated by a specialist craftsperson or replaced.