Strap for Villeret Équation du Temps Marchante Platinum

The lug width of the Blancpain Villeret 6638-3431-55B is 23mm. This measurement represents the internal distance between the lugs of the case where the strap is inserted. It is essential to respect this dimension precisely: any deviation would cause undesired play and compromise the fit. Measure the internal distance of your case with a digital calliper to confirm before ordering the strap.

For the Villeret 6638-3431-55B, the most appropriate strap is alligator leather with vegetable tanning in dark tones: cognac brown, black or navy blue. The natural texture of alligator evolves over time, acquiring a personalised patina that combines luxury with authenticity. Fine-grain calf leather represents a more understated and versatile alternative. Avoid vibrant straps: platinum demands chromatic restraint, not visual competition with the case.

To change the strap, you need to remove the lug pins. Use a dedicated tool (watch strap removal tool) or a small mallet and flat punch. Insert the punch from the rear side of the lug and tap gently to push the pin sideways. Remove both pins, slide off the old strap and insert the new one, aligning the holes. Reinsert the pins carefully: they must pass through the lug of the case and sit securely. If you are not experienced, consult a professional watchmaker.

Yes, it is possible to use aftermarket straps of equivalent quality as long as they strictly respect the 23mm lug width. Brands such as Hirsch, Barton, Camille Fournet and small artisans like Casati Milano produce compatible straps for the 6638-3431-55B. The key is to verify that the width is exactly 23mm and that the pin holes are correctly positioned. The quality of the leather and finishing must be consistent with the prestige of the case.

A quality leather strap used daily on a Blancpain Villeret has an average lifespan of 3-5 years before showing signs of wear (cracks, tears). With vegetable tanning and conscious care—drying it after moisture exposure—longevity can extend beyond 5 years. Alligator offers greater durability than calf leather. Factors affecting durability include: frequency of use, climate, sun exposure and leather quality. A Casati Milano strap includes a warranty on manufacturing defects for 18 months.