Baume & Mercier · Classima

Strap for Classima Executives

Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width18 mm
Case diameter42 mm
Reference8590 (aka: MOA8590, MOA08590, M0A8590, M0A08590)
FamilyClassima
MovementETA caliber 2824-2 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 Classima 8590 (aka: MOA8590, MOA08590, M0A8590, M0A08590)

Selected for the 18 mm lug width · workshop selection

All 18 mm straps →

The Classima 8590 (aka: MOA8590, MOA08590, M0A8590, M0A08590), seen from the bench

The Baume & Mercier Classima 8590 (MOA8590) is a 42mm stainless steel watch representing contemporary Geneva watchmaking philosophy. It features the reliable ETA 2824-2 automatic movement with date display, hours, minutes and seconds. The 18mm lug width is characteristic of this model and ensures compatibility with aftermarket straps. The refined case thickness and minimalist dial with applied indices and sword hands exemplify Swiss proportional design.

Frequently asked questions

What is the lug width of the Baume & Mercier Classima 8590?

The lug width of the Baume & Mercier Classima 8590 is 18 millimetres. This measurement is taken between the two terminal lugs of the case where the strap is attached. It is essential to verify this measurement before ordering an aftermarket strap to ensure perfect compatibility.

What is the best strap for the Baume & Mercier Classima 8590?

The best strap for the Classima 8590 depends on usage and personal preference. For formal elegance, we recommend dark brown or black alligator, which mirrors the case's sobriety. For chromatic versatility, vegan leather in blue, green, or burgundy tones. For those desiring natural patina development over time, shell cordovan in burgundy represents absolute excellence. For summer, a blue or grey woven NATO offers practicality whilst maintaining formal elegance.

How do I change the strap on the Baume & Mercier Classima 8590?

To change the strap, you require a spring bar tool (a small precision lever). Position the watch on a soft surface, identify the metallic lugs, insert the lever into the small hole beneath and push gently outward to extract the terminals. Repeat on the other side. Subsequently, align the new strap's lugs with the anchorage spaces and reinsert the terminals until they click into place.

Can I use an aftermarket compatible strap on this model?

Yes, the Baume & Mercier Classima 8590 is entirely compatible with quality aftermarket straps sized at 18mm. Ensure the strap is specifically dimensioned for this lug width. Milanostraps offers a curated selection of 18mm straps in premium materials—alligator, calf leather, shell cordovan—all customisable in length, initials, and stitching type.

How long does a leather strap last on a watch like the Classima 8590?

The lifespan of a leather strap varies depending on material and usage. A premium calf leather strap typically lasts 18–24 months with daily wear, whilst shell cordovan and alligator prove more durable, lasting 2–3 years or longer. Factors such as humidity, perspiration, and frequency of use influence longevity. Casati Milano guarantees 18 months on their custom-made artisanal straps.

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