Blancpain · Villeret

Strap for Villeret Squelette 8 Jours White Gold

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter38 mm
Reference6633-1500-55B
FamilyVilleret
MovementBlancpain caliber 1333SQ Hours, Minutes | Skeleton
CaseWhite Gold

Spring bar

Swiss Standard universal spring bars

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

Straps for the Villeret 6633-1500-55B

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Villeret 6633-1500-55B, seen from the bench

The Blancpain Villeret 6633-1500-55B embodies a watchmaking philosophy dating back to 1735, featuring a 38 mm white gold case with manual-winding caliber 1333SQ movement in skeleton version. The sapphire caseback reveals decorated plates and oscillating masses, while the silvered dial features a sunburst finish. Water resistance is rated at 30 meters, with approximately 40 hours of power reserve. The watch requires a 20 mm lug width strap—a specific dimension that balances the case diameter and ensures proper proportions on the wrist.

Frequently asked questions

What is the lug width of the Blancpain Villeret 6633-1500-55B?

The lug width of the Blancpain Villeret 6633-1500-55B measures 20 millimetres. This dimension refers to the space between the two lugs where the strap sits. It is important not to confuse lug width with the case diameter: the 6633-1500-55B features a 38mm case but 20mm lugs, a proportion deliberately designed to maintain visual balance.

Which strap is most suitable for the Blancpain Villeret 6633-1500-55B?

For the Villeret 6633-1500-55B, we recommend alligator with traditional tanning (taupe, bordeaux, or dark mahogany) or calf leather with vegetable tanning. Alligator offers interesting material contrast with the white gold case; vegetable-tanned calf develops natural patina over time, adding character. Avoid high-gloss leather straps that would flatten the restrained elegance of the silvered dial.

How do I change the strap on my Blancpain Villeret 6633-1500-55B?

Changing the strap on the 6633-1500-55B requires a spring bar tool (a small lever device for spring bars). Position the tool in the groove beside the lug, gently press to compress the spring bar mechanism, then withdraw the old strap. Install the new one by aligning the hole with the spring bar and allowing it to return to its natural position. Avoid forcing or damaging the case.

Can I fit an aftermarket-compatible strap to my Blancpain Villeret 6633-1500-55B?

Yes, any strap with 20mm lugs is compatible. Ensure you purchase a strap specifically designated for 20-millimetre lugs. Many online retailers claim compatibility across multiple sizes; always read the technical description carefully. Italian artisanal straps also allow personalisation of thickness, length, and fastening type (traditional buckle or deployante clasp).

How long does a leather strap last on a Blancpain Villeret 6633-1500-55B?

Durability depends on tanning method and frequency of wear. Alligator with vegetable tanning typically lasts 5–8 years of regular wear; calf leather 4–6 years. Frequency of use, sun exposure, and humidity all influence wear. Casati Milano straps include an 18-month warranty against manufacturing defects, but natural leather wear is not covered. Keep the strap dry and remove the watch before showering or bathing to maximise longevity.

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