Strap for Villeret Quantieme Perpetuel 8 Jours White Gold / Enamel

The lug width (ansa width) of the Blancpain Villeret 6659-3431-55B is 23 millimetres. This measurement corresponds to the distance between the two attachment pins on the watch case, excluding the pins themselves. To verify strap compatibility, use a digital calliper measured between the internal case attachments at 12 and 6 o'clock.

For the Villeret 6659, we recommend straps in Mississippi alligator or premium shell cordovan. Black alligator provides maximum contrast with the platinum case and a regular grain that mirrors mechanical precision. Cordovan develops a patina evolution over time, paralleling the metal's ageing. Full-grain vegetable-tanned calf straps offer softness and organic texture for those seeking a more refined aesthetic.

To change the strap, proceed with care: remove the watch from your wrist and place it on a soft surface. Use a spring bar tool to gently push the small elastic pin inward, freeing the strap from the case. Repeat on the other side. When fitting the new 23mm strap, ensure the pins sit uniformly and that the strap does not rotate on the case.

Yes, you can use high-quality aftermarket straps compatible with the 23mm lug width, provided they are crafted by specialised artisans and constructed from noble materials. We recommend avoiding generic straps and consulting producers who understand the importance of precise fitting and construction quality. On milanostraps.it, you will find a curated selection of verified 23mm artisanal straps.

A high-quality leather strap, whether in alligator or cordovan, typically lasts 4–6 years of daily wear, depending on climate conditions, frequency of use and maintenance practices. Natural leather is not waterproof and is sensitive to prolonged moisture. With proper drying after use and seasonal rotation between different straps, durability can extend to 8–10 years. Casati Milano guarantees 18 months against manufacturing defects and can perform structural repairs.