Blancpain · Villeret

Strap for Villeret Quantieme Complet 8 Jours Red Gold / Enamel Arabic

Takes 23 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width23 mm
Case diameter42 mm
Reference6639A-3631-55B
FamilyVilleret
MovementBlancpain caliber 6639 Hours, Minutes, Small Seconds | Date, Day, Month | Moonphase
CaseRed Gold

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

The Villeret 6639A-3631-55B, seen from the bench

The Blancpain Villeret Quantième Complet 8 Jours Red Gold / Enamel Arabic, reference 6639A-3631-55B, features a 42mm red gold case with the manual-wound Blancpain caliber 6639 movement. The dial displays hours, minutes, small seconds at 7 o'clock, date, day, month, and moon phase. Strap width is 23mm, a proportion specifically calibrated for this model's case and movement depth.

Frequently asked questions

What is the lug width of the Blancpain Villeret 6639A-3631-55B?

The lug width of the Blancpain Villeret 6639A-3631-55B is 23 millimetres. This dimension is specific to this model and was calculated by Blancpain designers to maintain proportional equilibrium between the 42mm case and movement thickness. Measure accurately by positioning a metal ruler across the internal lug holes of the original strap to verify the specification.

What strap material is recommended for the Villeret 6639A-3631-55B?

For the Villeret 6639A-3631-55B in red gold, we recommend dark brown alligator for classical elegance, shell cordovan with vegetable tanning for characteristic patina development, or vegetable-tanned calf for chromatic versatility. Butadiene rubber represents the contemporary choice without compromising luxury. Selection depends on usage: formal wear suits alligator or cordovan; daily wear benefits from robust calf or water-resistant rubber.

How do you change the strap on a Blancpain Villeret?

Strap replacement on a Blancpain Villeret occurs via spring bars. Acquire a spring bar tool and remove the bar by pushing inward; the strap will disengage easily. Insert the new strap through the lug holes and actuate the spring bar until it locks securely. Verify positioning by gently pulling: the strap must not shift. Professional watchmaker assistance is unnecessary for this standard operation.

Is an aftermarket strap compatible with the 6639A-3631-55B?

Yes, any strap with a 23mm lug width is entirely compatible with the Blancpain Villeret 6639A-3631-55B. The 23-millimetre dimension is the sole critical parameter. We recommend Italian artisanal straps realised with certified vegetable-tanned leather and stainless steel spring bars: they offer manufacturing quality equivalent to the watch's refinement.

What is the average lifespan of a leather strap on this timepiece?

A high-quality leather strap (alligator, cordovan, vegetable-tanned calf) for daily wear on a Blancpain Villeret guarantees 3-5 years of durability before significant aesthetic wear becomes apparent. Aging is natural and desirable: developed patina enriches visual character. With proper maintenance (periodic cleaning, protection from stagnant moisture), longevity extends toward 6-7 years. Waterproof rubber offers greater resistance (7-10 years) but less evolving character.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only