Strap for Senator Cosmopolite White Gold / Silver / Alligator / Pin

The lug width of the Senator 1-89-02-01-04-01 is 21mm. This is the classic measure found on traditional dress watches. To verify, measure the internal space between the lug edges with a digital calliper, parallel to the dial.

For a white gold Senator, we recommend genuine alligator leather (which enhances classical elegance), Horween shell cordovan (which develops a rich patina over time), or vegetable-tanned leather in dark brown or black (for greater versatility). The choice depends on personal usage context and preference regarding patina development.

Position the watch on a soft pad with the lug side facing upward. Use a spring bar tool to gently compress the internal spring bar passage, extracting the spring bar pin. Repeat for the other lug. Insert the new strap by compressing the passage again, until the pin clicks into position.

Yes, provided the lug width is exactly 21mm. Artisanal straps crafted from premium materials (alligator, shell cordovan, vegetable-tanned leather) are fully compatible. Ensure the strap is flawless and that the lug passage is constructed with precise tolerances.

A quality leather strap, whether vegetable-tanned or shell cordovan, typically lasts 3–5 years with daily wear. Longevity depends on humidity, perspiration, maintenance, and leather quality. Well-aged leather can last longer, developing a desirable patina whilst remaining structurally sound.