Patek Philippe · Twenty~4

Strap for Twenty~4 4909/110 White Gold / Diamonds

Integrated bracelet: measurements, the most common questions, and the way to a made-to-measure strap.

Integrated bracelet

The Patek Philippe Twenty~4 4909/110G is designed with a bracelet integrated into the case. For a compatible made-to-measure strap, the Casati Milano atelier builds it on your watch.

Reference4909/110G
FamilyTwenty~4
MovementPatek Philippe caliber 16-250 hours, minutes
Year2014
CaseWhite Gold

Spring bar

Swiss Standard universal spring bars

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

The Twenty~4 4909/110G, seen from the bench

The Patek Philippe Twenty~4 Ref. 4909/110G features a rectangular white gold case set with diamonds, launched in 1999. The integrated bracelet forms an inseparable structural element of the design. This model requires bespoke tailoring at the highest level of watchmaking craftsmanship, with custom strap work performed by Atelier Casati Milano using rare leathers like Mississippi alligator or Swift premium.

Frequently asked questions

Can a strap be fitted to the Patek Philippe Twenty~4 4909/110G?

Not in the conventional sense. The bracelet is integrated into the case: there are no standard lugs to attach a strap. The only way to wear this watch on leather is to build a bespoke attachment, shaped directly around the case geometry. I do this by hand, in the atelier, with the watch in front of me.

How does the bespoke strap process work for this model?

I work through <a href="/pages/casati-booking">Casati Milano</a>, my appointment-only atelier at Via XX Settembre 15 in Milan. I take measurements from the actual case — not from diagrams or generic references — and build every element of the attachment around the original curvature. There is no template: each strap is made from scratch.

Which leather do I recommend for the Twenty~4 in white gold?

I prefer Mississippi Alligator. White gold has a cool, precise light, and alligator responds with a texture that does not compete — it accompanies. On a watch this structured, a leather that is too soft or casual would feel out of place. Alligator holds its own character without overpowering the watch.

How long does a well-made strap last?

A strap built from quality leather, made to measure, easily lasts five or six years of regular wear. The key is care: avoid prolonged exposure to water, and apply a nourishing cream two or three times a year. Good leather does not age poorly — it develops a patina that tells a story, rather than simply wearing out.

The Twenty~4 was launched in 1999 — does it still make sense today?

I have seen it on the wrists of women with very different tastes, and it always holds up. The rectangular white gold case does not chase a trend — it has its own geometry, almost architectural. What Patek Philippe built in 1999 is an object that does not need to be updated, because it was never fashionable to begin with: it was always something else.

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