Strap for Royal Oak Self-Winding 37 Ruby / 50th Anniversary

No. The bracelet is integrated into the case: there is no standard lug to attach a conventional strap. The attachment is proprietary, built around the octagonal geometry of the white gold case. In the atelier I study it directly on the watch and build the attachment by hand, piece by piece.

I work through <a href="/pages/casati-booking">Casati Milano</a>, my by-appointment atelier at Via XX Settembre 15 in Milan. I bring the watch to the bench, take measurements directly from the case and shape every attachment by hand. I never start from a template: each piece is born from that specific watch.

I recommend Mississippi alligator in bordeaux hues. The chromatic dialogue with the set rubies is immediate and natural. As an alternative I am happy to work with Barenia: it develops a deep patina over time and balances the precious character of the white gold case very well.

With a quality leather and regular wear, I count on at least five or six years before the strap truly changes character. Rotating between straps helps: it extends the life of both. Barenia in particular ages beautifully — every mark tells a story rather than being a flaw.

Here white gold and set rubies work together on the octagonal geometry conceived by Gérald Genta. It is not merely an aesthetic matter: each stone must respect the case structure without compromising its integrity. I have seen very few watches where the gemological and the constructional aspects are integrated with this degree of coherence.