Baume & Mercier
Classima 10223 (aka: MOA10223)— lug 18mm

The lug width of the Classima 10223 is 18mm. This measurement is the space between the spring bars (metal pins) that connect the case to the strap. Measuring correctly ensures complete compatibility with aftermarket straps without risk of excessive tension or play.

The best strap depends on intended use. For formal wear and elegant daily wear, dark brown alligator or vegetable-tanned calf leather are ideal choices. For sports or summer contexts, premium canvas NATO or quality synthetic rubber work well. The 18mm compatibility provides access to artisanal catalogues with excellent leathers.

Remove the strap using a spring bar tool (small watch-specific screwdriver) to push the pins inward. Once released, the strap slides away. To install the new one, align the strap holes with the pins and gently press until you hear a click. If inexperienced, consult an expert to avoid damaging the case.

Yes, provided the width is exactly 18mm. Quality artisanal straps are built to universal specifications for this lug size. Always verify compatibility with the manufacturer before purchase and choose suppliers that guarantee constructive precision.

A quality leather strap (alligator or vegetable-tanned calf) typically lasts 3-5 years of daily use. Longevity depends on usage intensity, climate conditions, and maintenance (regular cleaning, avoiding excessive moisture). Shell cordovan, being denser leather, can last 7-10 years.