MB&F · Legacy Machines

Strap for Legacy Machine FlyingT Black Lacquer Pavée

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

Integrated bracelet

The MB&F Legacy Machines 05.WSL.S2 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 diameter39 mm
Reference05.WSL.S2
FamilyLegacy Machines
MovementMB&F caliber LM FlyingT hours, minutes | tourbillon escapement
Year2019
CaseWhite 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 05.WSL.S2, seen from the bench

The Legacy Machines LM FlyingT features the MB&F LM FlyingT caliber with a flying tourbillon regulator and hour-minute indication. The movement is characterized by a suspended tourbillon that dominates the three-dimensional dial architecture. The case adopts the contained dimensions typical of the MB&F Legacy Machines collection.

Frequently asked questions

What is the lug width of the MB&F Legacy Machine 05.WSL.S2?

The MB&F Legacy Machine 05.WSL.S2 features a lug width of 20mm. This dimension is specifically calibrated to maintain correct visual proportions between the compact 38.5mm case and the strap, avoiding disproportionate aesthetics. The correct measurement is the net inner space between the two case lugs, and any 20mm strap attaches perfectly without mechanical play.

What strap is most suitable for the MB&F Legacy Machine 05.WSL.S2?

For this white gold model, alligator with vegetable tanning in deep brown tones (cognac or chocolate) represents the most aristocratic choice, creating sophisticated contrast with the metal's luminosity. Alternatively, black calf leather with a refined deployante maintains classical severity, whilst NATO textiles in neutral colours (cream, sand, anthracite) amplify the sculptural nature of the visible movement.

How do you change the strap on the MB&F Legacy Machine 05.WSL.S2?

Strap change is executed via the springbars located beneath the lugs. Using a watchmaker's spritz tool (pointed instrument), gently push the old strap's bar to extract it from the holes. Subsequently align the new 20mm strap and reinsert the bar with controlled pressure until it seats. It is advised to perform this operation on a protected surface with caution to avoid damaging the gold case.

Are aftermarket straps compatible with the MB&F Legacy Machine 05.WSL.S2?

Yes, any strap with the correct 20mm lug width is mechanically compatible with the 05.WSL.S2. However, it is advisable to select strap thicknesses (typically 3.5–4.5mm) that align proportionally with case geometry. Bespoke artisanal straps guarantee optimal aesthetic compatibility with this model's sculptural character.

How long does a leather strap last on the MB&F Legacy Machine 05.WSL.S2?

Longevity depends on material quality and usage patterns. Premium alligator or vegetable-tanned calf typically endures 4–7 years of daily wear, developing a patina that enhances character. Factors such as humidity, wear frequency and maintenance significantly influence lifespan. A premium strap, if properly maintained and occasionally treated with natural oils, can exceed 5–8 years whilst preserving functionality and aesthetics.

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