Montblanc
Heritage 118512— lug 20mm
Montblanc Heritage 118512: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.
Artisanal Note
"This model requires a precise 20mm lug width to preserve the original sartorial balance."
Technical Specifications
Montblanc 118512The essential strap measurement.
Browse 20mm straps →118512
Montblanc caliber MB 29.24 Hours, Minutes | Tourbillon Escapement
The Heritage
Compatible Straps
Selected for the 20mm lug width of the Heritage
FAQ
What is the exact lug width of the Montblanc Heritage 118512?
The Montblanc Heritage 118512 features a lug width (ansa width) of 20mm. This measurement is essential when selecting aftermarket straps compatible with the timepiece. The lug width is measured by calculating the distance between the two metal pins protruding laterally from the case. A strap wider than 20mm will not fit securely, whilst one narrower will create undesirable play.
Which strap material is most suitable for the Montblanc Heritage 118512 in white gold?
For the 118512 in white gold, the most recommended materials are alligator leather in vegetable tanning or shell cordovan. Alligator provides consistent texture and natural grain that contrasts elegantly with the polished white gold case. Shell cordovan ages gracefully, developing a deep patina that amplifies the luminosity of the case. Vegetable-tanned calf leather represents a contemporary alternative offering superior chromatic harmony.
How should I change the strap on a Montblanc Heritage 118512?
Replacing the 118512 strap requires specialised precision tools: a dedicated spring bar removal tool. Position the timepiece on a soft cushion to avoid scratching the white gold case, then gently push the elastic pin inward until the internal spring releases. Remove the old strap, insert the new one ensuring the pin clicks into position audibly. We recommend having this operation performed by a specialised artisan to prevent case damage.
Are there quality aftermarket straps compatible with the 118512?
Yes, artisanal aftermarket straps in 20mm are available and compatible with the 118512. Milano Straps offers a dedicated collection of straps in alligator, calf leather, and vegetable-tanned materials specifically calibrated for this lug width. These straps are crafted using artisanal techniques and premium materials, ensuring aesthetic coherence and durability without compromising on manufacturing quality.
What is the average lifespan of a natural leather strap for the Montblanc Heritage 118512?
A natural leather strap with vegetable tanning, worn daily on a wristwatch like the 118512, has an average lifespan of 3-5 years before replacement is required. Wear speed depends on exposure to perspiration, moisture, and sunlight. A strap worn occasionally (2-3 times weekly) may last 7-10 years. Shell cordovan, owing to its natural fibrous structure, tends to age more elegantly and maintains functionality beyond five years, developing a character-rich patina.