Strap for Legacy Machine Split Escapement Launch Edition Grey

The lug width of the MB&F Legacy Machines 03.WL.FB is 20 mm. This measurement is determined by the spherical case geometry in white gold and remains an invariable construction standard. Always measure the internal distance between the two lugs to verify exact compatibility with aftermarket straps.

For the 03.WL.FB in white gold, alligator leather represents the noblest choice, as its natural texture dialogues perfectly with the spherical dome. Vegetable-tanned calf leather offers versatility and a patina that develops over time. Shell cordovan guarantees compactness and exceptional durability. Vulcanised rubber straps maintain formal elegance for sports use or humid climates.

Changing the strap requires specific watchmaker tools (spring bar tools, small hammer) to insert or extract the lug pins. It is recommended to consult a certified watchmaker or the Casati Milano atelier to avoid damaging the white gold case. The replacement does not require movement intervention, as the lugs are accessible laterally.

Yes, any strap with a 20 mm lug width is compatible. However, to preserve the aesthetic and structural integrity of such a rare timepiece, it is essential to choose materials of equivalent quality (alligator, shell cordovan, vegetable-tanned calf leather). A proportioned white gold deployante clasp will complete the formal harmony.

A high-quality artisanal strap in alligator or vegetable-tanned calf leather typically lasts 5–7 years with regular use, provided periodic maintenance is carried out. Shell cordovan can reach 10–15 years due to superior structural density. Continuous exposure to humidity, direct sunlight, and perspiration accelerates ageing. The Casati Milano atelier offers restoration and custom replacement services.