Strap for DC 57

The Damasko DC57 features a lug width of 20mm. This measurement is the historical standard of European sports chronographs. To verify compatibility with aftermarket straps, measure the distance between the two lugs with a digital calliper: the result must be exactly 20mm. Even variations of 0.5mm can compromise the correct fit of the strap on the case.

For the DC57, we recommend three main options: (1) alligator or vegetable-tanned calf leather, which imparts formal elegance and develops a unique patina over time; (2) NATO strap in robust nylon, ideal for tactile use and versatility; (3) vulcanised rubber, the most practical choice if used as a tool in high-stress environments. Avoid excessively glossy straps: the brushed finish of the case requires a strap with a muted texture for visual coherence.

To change the strap, obtain a spring bar removal tool or consult a watchmaker. Position the watch on a soft surface to prevent scratches. Locate the elastic pins within the lugs: apply gentle pressure inward with the tool while simultaneously lifting the lug. Once the old strap is freed, slide the new one through the lugs, ensuring the elastic pins lock correctly. Verify that the strap is symmetrical and aligned with the case before wearing.

Yes, the Damasko DC57 is fully compatible with quality 20mm aftermarket straps. Ensure the strap is designed for this exact width. Artisan Italian leather straps, woven NATO straps, and vulcanised rubber all function perfectly. Artisan-grade quality additionally guarantees superior durability compared to generic straps, with positive aesthetic ageing in the case of leather.

The longevity of a leather strap depends on tanning method, stitch quality, and usage. A vegetable-tanned alligator or calf leather strap, if properly maintained, lasts 3–5 years with daily wear. Vegetable-tanned leather ages progressively, developing a rich dark patina. To extend durability, avoid prolonged moisture exposure, periodically apply a natural leather conditioner, and consider alternating with a second strap to allow the material to breathe. After 4–5 years, even an exceptionally quality strap may require replacement for aesthetic rather than functional reasons.