Strap for Senator Observer Stainless Steel / Silver / Calf / Folding

The lug width of the Glashütte Original Senator 100-14-05-02-05 is 21 mm. This measurement is calculated from the outer distance between the two lugs that protrude from the case. A compatible strap must be manufactured to this exact dimension to ensure precise fit and prevent any slippage within the lugs.

For the Glashütte Original Senator, straps in African or South American alligator are recommended for a formal appearance, vegetable-tanned calf leather for sober elegance and natural ageing, or technical rubber if robustness in humid environments is required. All must feature a 21 mm lug width and thickness of 1.4-1.6 mm. Choice depends on use: alligator for office and formal occasions, calf leather for refined daily wear, rubber for light sports.

Strap replacement requires removal of the two spring bars from the lugs. Position the watch on a soft support, use a spring bar removal tool (spring bar tool) specific to 21 mm lugs, and gently push the bar towards the centre of the case to extract it from the internal spring. Once the first bar is removed, the strap releases. Reverse the operation with the new strap, ensuring both bars are fully inserted and locked by the spring.

No, if manufactured to comparable artisanal standard. An aftermarket strap in alligator tanned with vegetable tannin, manufactured by a specialist atelier, preserves the Senator's value because it respects the proportions, materials, and construction quality of the watch. Indeed, periodic strap changes (seasonal rotation) extend the longevity of each component. Avoid instead synthetic leather straps or buckles of poor quality, which could diminish the perceived value of the watch.

An alligator strap tanned with vegetable tannin, on a watch worn daily with reasonable care, lasts 4-7 years before showing visible wear on the buckles or edges. Vegetable-tanned calf leather has similar durability, 4-6 years. Shell cordovan, if properly maintained (protection from water, periodic drying), reaches 8-12 years. Lifespan depends on environmental humidity, frequency of wear, and water contact. Specialised leather cream every 6-8 months significantly prolongs strap lifespan.