Montblanc
Heritage 112521— lug 19mm

The lug width of the Montblanc Heritage 112521 is 19 millimetres. This measurement is essential for selecting a compatible strap, as it must match exactly the lugs of the case. To verify it, use a digital calliper and measure the net distance between the inner edges of the two lugs.

For the red gold and stainless steel case, alligator represents the most elegant and traditionally recommended choice, with a compact grain that creates sophisticated contrast. Vegetable-tanned calf offers superior softness and develops a fascinating patina over time. For everyday versatility, technical canvas NATO or quality rubber guarantee practicality and comfort.

The strap is changed using a spring bar tool. Position the watch with the case facing upwards, insert the bifid tip of the tool into the lateral grooves of the spring bar, compress gently to release the pin and extract the old strap. Repeat the operation from the other side. To install the new strap, align the holes with the pins and press until you feel the spring bar click into position.

Yes, any strap with a lug width of 19mm is perfectly compatible with the Montblanc Heritage 112521, provided the width is measured correctly. High-quality artisanal straps also guarantee a finish and durability often comparable to or superior to original straps, with the possibility of aesthetic and material customisation.

A quality leather strap, if properly maintained, lasts 3–5 years of intensive daily use. Alligator and vegetable-tanned calf, being fine leathers, tend to age more elegantly than other finishes. Longevity depends on sun exposure, humidity, frequency of use and quality of tanning. With ordinary maintenance (regular cleaning and occasional conditioning), lifespan extends significantly.