Strap for Senator Perpetual Calendar Stainless Steel / Silver / Rubber / Pin

The lug width of the Senator 100-02-22-12-06 is exactly 20mm. This measurement is critical for strap compatibility: straps must feature a 20mm lug width to fit properly onto the spring bar lugs. Measure the distance between the pin holes on your watch to confirm.

We recommend alligator leather with vegetable tanning or shell cordovan for the Senator 100-02-22-12-06: both materials preserve the formal aesthetic integrity of the model and develop natural patina over time. Structured calf leather offers a contemporary alternative. Avoid sport materials such as NATO or rubber, which detach the watch from its dress watch identity.

Remove the spring bars using a specialised tool (spring bar remover) from underneath the case. Lift gently until the bar disengages. Insert the new strap, aligning the holes with the lugs, and push the spring bar into position until you hear or feel a click. If inexperienced, consult a certified horologist.

Yes, provided the lug width is exactly 20mm and the construction quality is verified. Straps in alligator, shell cordovan, or fine calf leather integrate seamlessly. Avoid generic compatibility claims: always measure before purchase.

A quality leather strap on a dress watch such as the Senator 100-02-22-12-06 typically lasts 3–5 years with regular maintenance (annual conditioning, drying after moisture exposure). Shell cordovan resists wear for 5–7 years. Longevity depends on usage frequency, climate, and material care practices.