Blancpain · Villeret

Strap for Villeret Manuelle Piece Unique Shakudō Rowing

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

Lug width23 mm
Case diameter45 mm
Reference6615-3612-55B
FamilyVilleret
MovementBlancpain caliber 15B hours, minutes | skeleton
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 6615-3612-55B, seen from the bench

The Villeret is part of Blancpain's classic collection with a skeletonized dial revealing the movement. It is equipped with the in-house caliber 15B indicating the hours and minutes. The case features 23mm lugs.

Frequently asked questions

What is the exact lug width of the Blancpain Villeret 6615-3612-55B?

The lug width of the Blancpain Villeret 6615-3612-55B is 23mm. This measurement represents the distance between the lugs (spring bars) measured internally. To verify it, use a digital calliper positioned perpendicular to the two lugs: the inner distance must correspond to 23mm. This is the standard value for the 45mm Villeret and ensures compatibility with all artisanal straps declaring this specification.

Which strap should I choose to best enhance the red gold Villeret?

For a Villeret 6615-3612-55B in red gold, alligator leather with vegetable tanning remains the authentic choice. A cognac-aged alligator creates the most natural dialogue with the gold, with both materials developing personal patina over time. If you prefer versatility, open-grain calf leather offers contemporary styling while maintaining formality. Shell cordovan is the choice for those seeking durability and unmatched natural lustre. Every option should feature a solid deployante to reflect the watch's construction quality.

How do I change the strap on a Blancpain Villeret?

Strap replacement on a Villeret 6615-3612-55B is performed through removable spring bars. Use a spring bar tool (small implement with flat tip) to push inward the tiny metal pin on each side of the case, releasing the previous strap. Insert the new pins into the new strap (if already equipped with lugs) and fasten to the case again. If the strap lacks pins, transfer the originals from the previous strap. An atelier such as Casati Milano performs this operation at no additional cost.

Is a quality aftermarket strap compatible with the Blancpain Villeret 6615-3612-55B?

Yes, absolutely. Any artisanal strap with 23mm lug width is fully compatible with the Villeret 6615-3612-55B. Compatibility depends on the fact that the strap's lug width (the component that fastens to the case's spring bar holes) is precisely 23mm. Brands such as Casati Milano provide bespoke straps constructed to your watch's exact specification, often with material selection and craftsmanship superior to OEM straps.

How long does a leather strap last on a watch like the Blancpain Villeret?

A premium leather strap (alligator, calf, shell cordovan) of artisanal quality lasts an average of 8–12 years with daily use, extendable to 15+ years with regular maintenance. Durability depends on: frequency of wear, climate humidity, cleaning care, and tanning quality. Vegetable-tanned alligator ages better over time compared to industrial tanning methods. With Casati Milano, you receive 18 months warranty on manufacturing defects; for natural wear, the strap remains indefinitely repairable.

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.

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