Strap for Spirit Automatic 42 Silver / Strap

The lug width of the L3.811.4.73.2 is 22 millimetres. This dimension is specific to the model and determines compatibility with aftermarket straps. To verify, measure with a digital calliper the internal space between the lugs: it must be exactly 22mm from wall to wall. Do not confuse this measurement with the case diameter, which is 42mm.

For a Spirit with black or dark blue dial, we recommend vegetable-tanned calf leather in dark brown or cocoa tones: the natural ageing of plant-tanned leather enhances the aviatory character of the model. For those seeking formality, Mississipi alligator offers elegant geometric grain. On silver dial, straps in sand or olive-green tones evoke the historical DNA of the pilot's watch.

The L3.811.4.73.2 features straight lugs (not curved). Use a spring bar tool: position the fork tip in one of the lateral holes of the lug, apply gentle lever pressure to retract the internal pin, then slide the strap in the opposite direction. Repeat for the lower lug. Reverse the procedure for installation of the new strap.

Yes. The L3.811.4.73.2 accepts any strap with 22mm lug width. Artisanal straps produced in 22mm width often exceed OEM in terms of leather quality and workmanship: vegetable tanning, leather selection, hand-stitching and personalised deployant allow aesthetic and functional customisation that the original sometimes does not permit.

A vegetable-tanned calf strap, worn daily, has an average lifespan of 5-7 years. Wear speed depends on frequency of wear, UV exposure, sweat and humidity. The leather develops aesthetic patina within 18-24 months. With proper care (protection in humid environments, deployant maintenance), lifespan extends. Alligator, denser and more resistant, can exceed 10 years of use.