MB&F
Special Projects SP1.PL.B— lug 18mm
MB&F Special Projects SP1.PL.B: 18mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.
Artisanal Note
"This model requires a precise 18mm lug width to preserve the original sartorial balance."
Technical Specifications
MB&F SP1.PL.BThe essential strap measurement.
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MB&F caliber SP One Hours, Minutes
The Heritage
Compatible Straps
Selected for the 18mm lug width of the Special Projects
FAQ
What is the lug width of the MB&F Special Projects SP1.PL.B?
The MB&F Special Projects SP1.PL.B features 18 mm lugs. This measurement is specific to the model and requires straps calibrated to precisely this width. Correct measurement is obtained by using a digital calliper inside the spring bar seat or by measuring the distance between the two external lug pins. Even a 1 mm deviation compromises the aesthetic balance and structural stability of the strap.
Which strap should I pair with the platinum MB&F Special Projects SP1.PL.B?
For the platinum SP1.PL.B, the ideal strap is alligator leather in chocolate or cognac tones, creating an elegant dialogue with the metal's austere coldness. Alternatively, vegetable-tanned calf leather offers softness and develops natural patina over time. For technical solutions, a cotton ballistic NATO in anthracite grey or vulcanised rubber in black ensures durability and versatility.
How do I change the strap on an MB&F watch?
To change an MB&F strap, you will need specialised tools: a spring bar remover and a stable work surface. Position the watch with the lugs facing upward, then insert the remover into the small lateral slot of the spring bar to release it. Once the spring bar is extracted, the old strap slides away. Insert the new 18 mm strap by aligning it with both pins, then reinsert the spring bar until it clicks. If uncertain, entrust the task to a professional service such as Atelier Casati Milano.
Can I use an aftermarket 18mm strap on the MB&F Special Projects SP1.PL.B?
Yes, aftermarket 18 mm straps are fully compatible with the SP1.PL.B. It is essential to verify that the strap is crafted with thicknesses consistent with platinum (recommended thickness 1.4–1.6 mm) and that the deployant buckle (if present) is proportionate to the 38 mm case. Specialised retailers such as Milano Straps provide artisanal straps calibrated specifically for this lug width.
How long does a leather strap last on the MB&F Special Projects SP1.PL.B?
A high-quality leather strap (alligator or vegetable-tanned calf) mounted on a daily-wear watch typically lasts 4–6 years before requiring replacement. Durability depends on exposure to moisture, perspiration and direct sunlight. Vegetable tanning develops a patina that imparts character to the strap, but gradually weakens its fibres. Regular maintenance (gentle cleaning with soft cloths and occasional conditioning) extends lifespan to 7–8 years.