Technical Archive

Patek Philippe
Twenty~4 7300/1200A-010

Patek Philippe Twenty~4 7300/1200A-010: strap made to measure on the watch at the Casati Milano atelier, by appointment.

Twenty-4 Automatic Stainless Steel / Diamond / Black

Technical Specifications

Patek Philippe 7300/1200A-010
Reference

7300/1200A-010

Movement

Patek Philippe caliber 324 S C Hours, Minutes, Seconds | Date

The Heritage

The Patek Philippe Twenty~4 is equipped with the automatic caliber 324 S C indicating hours, minutes, seconds and date. The model features a steel case and bracelet with diamonds set on the bezel and dial. The reference 7300/1200A-010 belongs to the manufacturer's ladies collection.
Made to Measure

The strap for this watch is made to measure

On the Patek Philippe Twenty~4 the bracelet is drawn as part of the case: no catalogue strap will fit. In the atelier we take the measurements on the watch itself and build the strap on the piece — that is the work of Casati Milano.

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FAQ

Can a strap be fitted to the Patek Philippe Twenty~4 7300/1200A-010?

Not in the conventional sense. The bracelet is integrated into the case: there are no standard lugs to attach an off-the-shelf strap. Every intervention requires a bespoke design, built around the actual watch, not a generic measurement.

How does the bespoke strap process work for this model?

I handle this type of case exclusively at <a href="/pages/casati-booking">Casati Milano</a>, by appointment only. I bring the watch to the bench, study the proportions of the case and build the attachment around the original geometry. We don't start from a template — we start from the watch.

Which leather would you recommend for the Patek Philippe Twenty~4?

For a watch like this, I lean towards wax-finished smooth calfskin in nude or light taupe. It holds its own against the steel without overpowering it, and it has the quiet confidence that suits an watch made for a woman who doesn't need to shout. I've seen alligator work too, but it demands an even more carefully calibrated project.

How long does a well-made strap last?

With quality leather and basic care, five to seven years is an honest estimate for daily wear. Leather ages: it marks, softens, takes the shape of the wrist. That's not a flaw — it means the material is alive. The key is to keep it away from water and condition it every few months with a neutral cream.

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

I've seen many watches come across the bench. The ones that stand the test of time always have a clear structure — they don't follow trends, they anticipate or ignore them. The Twenty~4 was born with a seven-link architecture that didn't ask permission from anyone. Today I find it more coherent than many models that came after it.

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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By appointment only · Milan

The atelier's website: casatimilano.com