Montblanc
Star 107914— lug 19mm

The lug width of the Montblanc Star 107914 is precisely 19 millimetres. This measurement represents the distance between the two attachment lugs on the case and determines strap compatibility. Using a strap constructed specifically for this dimension ensures perfect fit without lateral movement or misalignment.

For the 107914, we recommend alligator leather in cognac brown or deep black, or calf leather with vegetable tanning. The yellow gold and stainless steel bicolour of the case pairs naturally with these finishes. Alternatively, a high-tenacity nylon NATO offers functional versatility. Your choice depends on use context: formal, business-casual, or sports-oriented.

To change the strap: remove the two lateral pins (lugs) using a small screwdriver or dedicated tool. Slide the old strap away from the pins and position the new one, aligning it correctly. Reinsert the pins until you feel them click into place. Verify the strap sits properly in the case lugs. We recommend having a qualified watchmaker perform this operation if you lack experience.

Yes, provided they feature a 19-millimetre lug width. Atelier Casati Milano produces bespoke artisanal straps specifically engineered for the 107914, guaranteeing perfect compatibility without compromise. Avoid generic 18mm or 20mm straps: they compromise fit and accelerate leather deterioration.

A quality leather strap, whether vegetable-tanned or alligator, typically lasts 5–8 years with daily wear and regular maintenance. Longevity depends on climate, humidity, and care. Rubber or NATO straps endure 3–5 years. Periodic cleaning with a damp cloth and annual conditioning for leather significantly extend strap lifespan.