Montblanc · Tradition

Strap for Tradition Date Automatic 40mm

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter40 mm
Reference112609
FamilyTradition
MovementMontblanc caliber MB 24.17 hours, minutes, seconds | date
CaseStainless 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 Tradition 112609

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Tradition 112609, seen from the bench

The Montblanc Tradition reference 112609 features the automatic MB 24.17 caliber with hour, minute, second and date indications. The case has 20mm lugs for the strap. The movement offers the essential watchmaking functions with date complication.

Frequently asked questions

What is the lug width of the Montblanc Tradition 112609?

The Montblanc Tradition 112609 features a lug width of 20mm, an essential specification for sourcing compatible aftermarket straps. This measurement is precise and corresponds to the internal horizontal distance between the two integrated lugs.

What is the best strap for the Montblanc Tradition 112609?

The choice depends on your intended use. For formal occasions, a premium alligator strap amplifies the aesthetic refinement of the brushed steel case. For daily versatility, vegetable-tanned leather offers natural patina development and texture richness. NATO straps provide effortless rotation, whilst rubber represents contemporary sport-casual functionality.

How do I change the strap on the Montblanc Tradition 112609?

Strap replacement is performed via spring bars seated within the integrated lugs. Using a dedicated spring bar tool, compress the spring mechanism and extract the bar, releasing the original strap. Insert the new strap following the same procedure, ensuring the spring bar seats correctly. Handle the case with care to avoid scratching the brushed finish.

Can I use a premium aftermarket strap on this Montblanc?

Yes, absolutely. Aftermarket straps measuring 20mm are entirely compatible with the Montblanc Tradition 112609. The quality of the result correlates with material choice and manufacturing standards: an exceptional alligator or leather transforms the wearing experience without compromising comfort or longevity.

How long does a leather strap last on this watch?

Leather strap longevity depends on usage intensity and material quality. Premium alligator or vegetable-tanned leather worn daily typically remains serviceable for 5-7 years before requiring replacement. Natural patina development enriches aesthetics progressively. Environmental factors—humidity, perspiration, UV exposure—accelerate natural ageing.

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.

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