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Baume & Mercier · Classima

Strap for Baume & Mercier Classima 8786

The Classima Executives takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

18mm
18 mm strapsAll Baume & Mercier
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Lug width18 mm
Case diameter42 mm
Reference8786 (aka: MOA8786, MOA08786, M0A8786, M0A08786)
FamilyClassima
MovementETA caliber 6498-1 Hours, Minutes, Small seconds
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

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What I'm asked about the Baume & Mercier Classima 8786

What strap size does the Baume & Mercier Classima 8786 take?

The Baume & Mercier Classima 8786 needs 18 mm between the lugs, usually 16 mm at the buckle. It's the size I've been fitting on it for years.

Can the strap on the Baume & Mercier Classima 8786 be changed?

Yes. It has spring bars between the lugs: with the right tool the strap comes off in a minute. If you'd rather not risk a scratch, I do it in the workshop.

Can I put a leather strap on the Baume & Mercier Classima 8786?

Yes, in 18 mm leather. On a 42 mm case a calf strap works every day; if you want something more, alligator.

Which strap do you recommend for the Baume & Mercier Classima 8786?

A 18 mm calf strap, for every day. You'll find it ready in the 18 mm collection. If you'd rather have something built on your wrist, the Casati atelier.

Straps for the Classima 8786

Selected for the 18 mm lug width · workshop selection

All 18 mm straps →

The Classima 8786, seen from the bench

The Baume & Mercier Classima reference 8786 is equipped with the manual-winding ETA 6498-1 caliber. The movement offers indication of hours, minutes and small seconds. The technical configuration follows the classic standards of traditional watchmaking with a three-dial display.

Frequently asked questions

Which strap material is most suitable for the Baume & Mercier Classima 8786?

For the Classima 8786, we recommend high-quality alligator, which emphasises the timeless elegance of the watch. Alternatively, vegetable-tanned calf offers excellent softness and durability, whilst shell cordovan is ideal for daily wear with superior moisture resistance. Your choice depends on your lifestyle and intended use.

Can I use an aftermarket strap from different brands on my Classima 8786?

Yes, provided the strap is specifically designed for an 18mm lug width and the dimensions are compatible with the case's width and thickness. Always verify that the deployante (folding clasp) or closure system is proportionate to the watch's mass. All our artisanal straps from Milano Straps are tested for compatibility with this reference.

What is the average lifespan of a leather strap for the Classima 8786?

A quality leather strap (alligator, calf, cordovan) typically lasts 3–5 years with daily wear, provided adequate maintenance is observed: avoid prolonged water exposure, protect from direct sunlight, and clean regularly with a soft cloth. The natural ageing of leather is a virtue, not a defect—it develops patina and character over time. Custom straps from Casati Milano include an 18-month warranty against manufacturing defects.

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

The atelier's website: casatimilano.com