Montblanc
Heritage 111580— lug 19mm

The lug width of the Montblanc Heritage 111580 is 19 mm. This measurement represents the distance between the two pins of the case where the strap attaches. Recommended measurement: use a digital calliper positioned on the pin holes, with the watch unstrapped. Precision is essential to ensure a perfect fit without play or excessive tension.

Alligator leather in black or brown tones is the most coherent choice with the Heritage aesthetic: fine grain and controlled texture enhance the classical elegance of the case. Alternatively, vegetable-tanned calf leather offers natural ageing and progressive patina whilst maintaining daily versatility. For a sport-elegant approach, heavyweight canvas NATO or natural rubber ensures practicality without aesthetic compromise.

Extract the case pins using a spring bar tool (small flat device with hooks), pressing gently downward to release the internal spring. Remove the old strap by extracting the pins. Insert the new pins into the 19 mm strap, align them with the case holes, and press upward until they click into position. Verify that both sides are securely fastened before wearing the watch.

Yes, any strap with a 19 mm lug width is compatible with the 111580, regardless of brand. Standard universal pins function on all cases. However, we recommend choosing specialised strap manufacturers that guarantee construction quality, finishes and materials that respect the movement's identity. Always verify the strap length to ensure a comfortable fit on your wrist.

Durability depends on material and usage. Pressed alligator typically lasts 3–5 years with moderate daily wear. Vegetable-tanned calf, subject to natural ageing, can last 4–6 years if regularly maintained (gentle cleaning, avoid prolonged immersion). Natural rubber is essentially indestructible, maintaining elasticity for 5–8 years of heavy use. Storage without wearing extends lifespan. Critical factors are: UV exposure, humidity, perspiration and frequency of use.