Audemars Piguet · Royal Oak

Strap for Royal Oak Self-Winding 41 Amethyst / 50th Anniversary

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

Integrated bracelet

The Audemars Piguet Royal Oak 15514BC.AY.1284BC.01 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.

Case diameter41 mm
Reference15514BC.AY.1284BC.01
FamilyRoyal Oak
MovementAudemars Piguet caliber AP 4309 hours, minutes, seconds
Year2022 - 2022
CaseAmethysts | White Gold, Amethysts

Spring bar

Swiss Standard universal spring bars

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

The Royal Oak 15514BC.AY.1284BC.01, seen from the bench

The Royal Oak features the automatic AP 4309 caliber with hour, minute and second indication. The reference 15514BC.AY.1284BC.01 belongs to the collection introduced by Audemars Piguet in the '70s. The movement ensures the essential time functions with the precision characteristic of the Swiss manufacture.

Frequently asked questions

Can a standard strap be fitted to the Royal Oak 15514BC.AY.1284BC.01?

No. The bracelet is integrated directly into the case: there is no standard lug to attach an off-the-shelf strap. The trapezoidal attachment geometry is proprietary. The only option is a bespoke strap, built from the physical watch itself.

How does the bespoke strap service work for this Royal Oak?

I handle this type of piece exclusively through <a href="/pages/casati-booking">Casati Milano</a>, the by-appointment atelier at Via XX Settembre 15 in Milan. I take every measurement directly from the case at the bench, millimetre by millimetre. There is no template: each attachment is shaped by hand on the specific watch. The appointment exists precisely for this reason.

Which leather would I recommend for this Royal Oak in white gold and amethysts?

On a piece with amethysts and white gold, I favour natural Vintage Barenia, left to age without aggressive treatments. It has a texture that works with the precious metal without overpowering it. Alternatively, a Mississippi alligator in smoky grey — understated, with the right character for a watch that needs no emphasis.

How long does a well-made artisan strap last?

With quality leather and basic care, I have seen straps hold up through ten, twelve years of daily wear. The leather does not deteriorate: it transforms. Barenia, for instance, develops a patina that with time makes it more beautiful than when it was new. The main enemy is prolonged moisture — simply remove it after bathing and let it dry flat.

What is the character of this Royal Oak and what sets it apart from other models in the family?

The Royal Oak was born in 1972 from a Gérald Genta design: a sports watch in steel, with an octagonal bezel and exposed screws, that changed the way watchmaking was conceived. This version in white gold with amethysts takes a different path — closer to high jewellery than sport. I have seen few watches where technical structure and gemology coexist without one overwhelming the other. It is a rare balance, built on the solidity of the original design.

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