Archimede
1950'S UA8069-A1.1— lug 20mm

The lug width of the Archimede 1950'S UA8069-A1.1 is 20mm. This measurement is taken between the inner shoulders of both lugs and represents the correct dimension for ordering a compatible strap. To verify this yourself, use a digital calliper or millimetre ruler positioned perpendicular to the case, measuring from one inner lug shoulder to the other.

For the UA8069-A1.1 reference, we recommend genuine alligator in black or cognac with vegetable tanning for formal occasions, vegetable-tanned calf for daily wear with character development, or a canvas NATO strap for sporting versatility. Your choice depends on primary use context: the case construction supports multiple interpretative solutions rather than prescribing a single option.

The strap is changed using a spring bar tool (implement with curved tip): insert the tip into the small hole present on the spring that supports the lug, gently extract the metal spring from its seat, remove the worn strap. Repeat the operation from the opposite side. To install the new strap, align the lugs and press until the metal spring clicks into place.

Yes, any strap with a 20mm lug width is compatible with the UA8069-A1.1. Bespoke artisanal straps from Milano Straps guarantee construction quality equivalent to or superior to OEM straps: you may choose superior materials including genuine alligator, shell cordovan or vegetable-tanned calf, customising colour, closure and stitching.

A quality leather strap (alligator, calf, shell cordovan) typically lasts 2–4 years of daily wear, dependent on climate, frequency of use and maintenance. Vegetable-tanned leather straps develop aesthetically positive patina during the first year of use. To extend strap lifespan, avoid prolonged exposure to direct moisture and apply leather conditioner every six months.