Montblanc · Heritage

Strap for Heritage Chronometrie Automatic 38mm Two Tone

Takes 19 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width19 mm
Case diameter38 mm
Reference112521
FamilyHeritage
MovementMontblanc caliber MB 24.09 hours, minutes, seconds | date
CaseRed Gold, Stainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Heritage 112521

Selected for the 19 mm lug width · workshop selection

All 19 mm straps →

The Heritage 112521, seen from the bench

The Montblanc Heritage Chronometrie Automatic 112521 is a 38mm two-tone watch combining red gold and stainless steel. It features the MB 24.09 automatic movement and includes hours, minutes, seconds, and date display. The 19mm lug width is specifically proportioned for daily wear and compatibility with aftermarket straps.

Frequently asked questions

What is the lug width of the Montblanc Heritage 112521?

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.

Which strap material is best suited for the Montblanc Heritage 112521?

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.

How do you change the strap on a Montblanc Heritage 112521?

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.

Is an aftermarket 19mm strap truly compatible with this watch?

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.

How long does a leather strap last on the Montblanc Heritage 112521?

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.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only