Laco · Pilot Watches

Strap for Pilot Watch Basic Genf Stainless Steel / Black

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter42 mm
Reference861807
FamilyPilot Watches
MovementUnknown caliber Unspecified Quartz
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Pilot Watches 861807

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Pilot Watches 861807, seen from the bench

The Laco 861807 Pilot Watch Basic Genf is a stainless steel instrument watch with a 42 mm case diameter and 20 mm lug width, continuing the Pforzheim school tradition of German watchmaking since the 1930s. Featuring a quartz movement for reliable precision, the watch prioritizes extreme dial legibility in low light conditions and functional geometry without superfluous decoration. The satin-finished stainless steel case is designed for ergonomic wrist presence, while applied luminescent indices and shaped hands ensure excellent contrast and readability at distance.

Frequently asked questions

What is the lug width of the Laco Pilot Watches 861807?

The 861807 features a 20 mm lug width, a common standard in German sports and aviator watches. This width accommodates robust straps whilst maintaining correct visual proportions between case and wrist band. To verify, measure the distance between the internal lug attachments using a calliper or ruler.

Which strap is most suitable for the Laco Pilot Watches 861807?

To enhance the instrumental identity of the Laco 861807, we recommend an alligator strap with vegetable tanning (dark brown or black) or a vintage calf leather with natural patina. If you prefer low-maintenance sports solutions, a heavy cotton NATO strap or a vulcanised rubber strap fully respect the aviator style of the model.

How do I change the strap on my Laco 861807?

To change the strap, use a spring bar tool and insert it gently under the lug. Press inward to release the spring, then extract the bar from the first lug. Repeat from the other side. Insert the new strap by aligning its lug to the attachments and push until you hear the spring click into place.

Can I use a 20 mm aftermarket strap on the Laco 861807?

Yes, any strap with a 20 mm lug width is compatible with the 861807. Ensure the strap is slightly narrower than the case (approximately 1-2 mm margin per side) so it does not protrude from the attachments. High-quality artisan straps also guarantee more interesting patina and ageing over time.

How long does a leather strap last on a Laco Pilot Watches?

A high-quality vegetable-tanned leather strap typically lasts 3-5 years of daily use, depending on exposure to moisture and perspiration. Patina and light cracking are normal and desirable for a vintage strap. If stored under proper conditions (away from excess humidity and direct heat), it can last considerably longer. Vulcanised rubber, conversely, resists for approximately 5-7 years before becoming brittle.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only