MB&F · Horological Machines

Strap for Horological Machine N°1 HM1 White Gold

Integrated bracelet: measurements, the most common questions, and the way to a made-to-measure strap.

Integrated bracelet

The MB&F Horological Machines 10.T41WL.S is designed with a bracelet integrated into the case. For a compatible made-to-measure strap, the Casati Milano atelier builds it on your watch.

Case diameter59 mm
Reference10.T41WL.S
FamilyHorological Machines
MovementMB&F caliber HM1 hours, minutes | power reserve indicator, tourbillon escapement
CaseWhite Gold

Spring bar

Swiss Standard universal spring bars

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

The Horological Machines 10.T41WL.S, seen from the bench

The Horological Machines HM1 represents MB&F's debut in the avant-garde horology segment, introduced in 2007. The timepiece features the MB&F HM1 caliber with a visible tourbillon escapement and power reserve indicator, in addition to hour and minute display. The case presents a distinctive three-dimensional design that departs from traditional watch forms.

Frequently asked questions

Can you mount a standard strap on the MB&F Horological Machines 10.T41WL.S?

No, the bracelet is integrated into the white gold case structure. The lugs are not standard: a conventional strap won't attach. In the atelier, I build the strap directly onto your case, with bespoke lugs that respect the original architecture.

How does the bespoke strap work for this model?

I work by appointment only at <a href="/pages/casati-booking">Casati Milano</a>. I take measurements directly from your case, study the topography of the white gold sculpture, and hand-craft the lugs. Every strap is born from your specific watch, not the other way around.

Which leather do I recommend for the MB&F Horological Machines 10.T41WL.S?

I prefer Alligator Mississippi or Barenia for this case. The HM10 is audacious, sculptural, almost brutal in its geometry. It needs leather that speaks the same language: robust, with a grain that breathes movement. Iced alligator dialogues perfectly with white gold without softening the vision.

How long does a well-made strap last?

With daily wear and minimal care — wipe with a soft cloth, protect from extreme humidity — a strap in rare leather lasts 4 to 6 years before refinishing. Leather ages well, develops patina, tells a story. That's not weakness: that's character.

Why does an MB&F need a bespoke strap?

Maximilian Büsser doesn't design conventional watches. The HM10 is a mechanical sculpture where every curve has purpose. An industrial strap betrays this radical vision. Craftsmanship isn't luxury: it's aesthetic and functional coherence with what you wear on your wrist.

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.

Request an appointment →

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