MB&F · Legacy Machines

Strap for Legacy Machine LM101 Frost Red Gold

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

Integrated bracelet

The MB&F Legacy Machines 51.RL.FW 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 diameter40 mm
Reference51.RL.FW
FamilyLegacy Machines
MovementMB&F caliber LM101 Hours, Minutes | Power reserve indicator
Year2015
CaseRed Gold

Spring bar

Swiss Standard universal spring bars

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

The Legacy Machines 51.RL.FW, seen from the bench

The MB&F Legacy Machines features the LM101 caliber with hours, minutes and power reserve indication. The movement has a three-dimensional architecture with a suspended balance wheel and visible barrel. The 51.RL.FW reference is part of the Legacy Machines collection that reinterprets traditional mechanical watchmaking.

Frequently asked questions

Can a standard strap be fitted to the MB&F Legacy Machines 51.RL.FW?

No, this model does not accept conventional pin-buckle straps. The attachment is integrated into the case design and incompatible with standard solutions. However, a bespoke strap can be hand-built directly on the watch by <a href="/pages/casati-booking">Casati Milano</a>, where specialists measure the exact lugs and create a definitive custom solution.

How does the bespoke strap construction work for this model?

<a href="/pages/casati-booking">Casati Milano</a>'s atelier examines your watch directly, measures the proprietary attachments with precision, selects the leather, and crafts the buckle and keeper according to exact proportions. It is not a simple replacement: it is a sartorial reconstruction that honours Büsser's original design and amplifies the identity of your Legacy Machines.

What leather is recommended for the MB&F Legacy Machines 51.RL.FW?

Vegetable-tanned leather with pronounced grain—aged calf, natural suede—reflects the sophistication of the movement and the elegance of rose gold. Contrasting with deep, intense leather intensifies the luminosity of the metal; choosing warm tones creates chromatic continuity with the patina rose gold develops over time. The choice should reflect how you want this watch to communicate at your wrist.

How long does an artisanal hand-built strap last?

A strap crafted from superior leather using correct sartorial techniques lasts many years, often more than a decade of regular wear. Longevity depends on the leather selected, frequency of use, and maintenance. A well-constructed strap patinas elegantly, developing character and visual depth over time—much like a fine mechanical watch.

Why does the MB&F Legacy Machines 51.RL.FW deserve a well-made strap?

This model embodies Maximilian Büsser's vision: watchmaking that rejects conformity, with sophisticated movement, hand-finished bridges, rose gold that patinas over time. A custom-built strap completes this pursuit of constructive excellence and design authenticity, transforming the accessory into a conscious declaration of how you choose to wear craftsmanship at 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