Strap for Legacy Machine Perpetual Stainless Steel / Salmon

The lug width of the MB&F Legacy Machines 03.SL.S is 20mm. This specific measurement ensures harmonious proportions between the 44mm case and the strap. Always verify that a replacement strap is compatible with 20mm lugs to guarantee proper fitment and secure attachment.

The ideal strap depends on intended use and aesthetic preference. For refined appearance, we recommend leather with vegetable tanning or alligator, which emphasise the luxurious character of the case. For daily versatility, a technical fabric NATO strap or FKM rubber ensures comfort and ease of exchange. The brushed stainless steel case pairs elegantly with both dark tones (black, brown) and bold colours.

Strap replacement requires a spring bar tool or small flat screwdriver. Insert the tool into the lateral hole of the lug and gently lift the internal spring, then extract the pin. Repeat on the other side. Position the new strap, aligning the holes with the lugs, then reinsert the pins until you hear the characteristic click. Avoid abrupt movements to prevent damage to the case steel.

Yes, any quality artisanal strap with 20mm width is compatible with the 03.SL.S, provided the lugs are cut to the correct width specification. High-quality aftermarket straps allow personalisation of the watch without compromising case integrity. We recommend straps crafted from premium leathers (alligator, shell cordovan, calf) or certified technical materials to ensure durability and comfort.

Lifespan depends on leather quality, frequency of use and care. A premium vegetable-tanned leather strap, properly maintained, lasts 3–5 years of daily wear. Alligator and shell cordovan, thanks to their robust fibrous structure, can exceed 5–7 years. To prolong lifespan, avoid prolonged exposure to moisture and extreme heat, and periodically condition the leather with dedicated oils. FKM rubber, by comparison, offers superior durability (10+ years) but less aesthetic appeal.