Strap for Villeret Quantieme Complet 8 Jours White Gold / Black Enamel

The lug width of the 6639-3437-55B is 23 mm. This measurement is determined by the internal distance between the horizontal pins of the case and must be measured precisely using a digital calliper. An inaccurate measurement compromises the aesthetic of the watch, creating unwanted play between the strap and the case.

Dark brown or black alligator is the most appropriate choice for this case: its geometric texture amplifies the design's rationality and its patina evolves naturally in harmony with white gold. Alternatively, vegetable-tanned calf leather in medium brown tones or shell cordovan offer chromatic depth and character over time.

The strap is changed by extracting the horizontal pins (lugs) from the case using a dedicated push-pin tool. The new strap must be positioned symmetrically on the lugs before reinserting the pins. For high-value watches, it is advisable to entrust the work to an authorised service centre or qualified craftsmen to avoid damage to the case.

Yes, any strap manufactured with a 23 mm lug width is compatible with the 6639-3437-55B. It is essential to verify that the lug width is exactly 23 mm and that the thickness of the strap body is proportionate to the case size (42 mm) to avoid unbalanced visual effects.

A fine leather strap such as alligator or shell cordovan, with proper care (protection from moisture, regular cleaning, rotation with other straps), typically lasts 5-8 years before the fibres require replacement. Durability depends on daily use, climatic conditions and natural wear of the leather.