Strap for Classima Executives

The lug width of the Baume & Mercier Classima 8787 is 18mm. This dimension represents a deliberate balance: sufficiently generous to provide visual mass without weighing down the 39mm case, yet specific enough to require bespoke leather straps precisely sized. To verify compatibility, measure the distance between the springing lugs using a digital calliper.

The ideal strap depends on your usage context and dial colour. For maximum formal elegance, a Mississippi alligator or shell cordovan in cognac or deep bordeaux enhances the case's sobriety. French calf in black or navy blue offers urban versatility. For those who appreciate aesthetic evolution, Tuscan vegetable tanning develops visible patina over time. Material choice is paramount: each option subtly modifies the watch's character through texture and light absorption.

Strap change requires removal of the lugs (the lateral pins). Use a dedicated pin removal tool or consult a watchmaker to avoid case damage. Position the watch flat, locate the lugs on both sides, and extract them gently outward. Once free, the old strap separates easily. Insert the new 18mm strap, aligning it perfectly with the holes, then reintroduce the pins with gentle, consistent pressure until you feel resistance.

Yes, any strap with an 18mm lug width is mechanically compatible. However, not all aftermarket straps are equal in aesthetic proportion: the Classima 8787 is a formal dress watch, so it performs best with natural leather straps (alligator, shell cordovan, calf, vegetable tanning). Quality bespoke aftermarket straps comply with width specifications and allow customisations of length, thickness and stitching thread impossible with OEM straps.

Lifespan depends on material, tanning method and seasonal use. Quality alligator or shell cordovan, worn occasionally in controlled environments (office, dinner), resists degradation for 3-4 years. French calf reduces this estimate to 2-3 years due to lower fibre density. Tuscan vegetable tanning offers superior longevity (4-5 years) because natural tannins provide intrinsic protection. Perspiration and humidity reduce durability: in tropical climates or with daily wear, consider rotating between straps. Best practice is to dry the watch after accidental water contact and occasionally apply neutral mink oil to maintain leather elasticity.