Technical Archive

Audemars Piguet
Royal Oak 77450BA.GG.1361BA.01

Audemars Piguet Royal Oak 77450BA.GG.1361BA.01: strap made to measure on the watch at the Casati Milano atelier, by appointment.

Royal Oak Selfwinding 34 Frosted Yellow Gold / Crystal Sand

Technical Specifications

Audemars Piguet 77450BA.GG.1361BA.01
Reference

77450BA.GG.1361BA.01

Movement

Audemars Piguet caliber AP 5800 Hours, Minutes, Seconds | Date

The Heritage

The Royal Oak Selfwinding 34 Frosted Yellow Gold ref. 77450BA.GG.1361BA.01 features a 34mm rose gold case with integrated bracelet. Designed by Gérald Genta in 1972, this iconic octagonal sports watch showcases a distinctive hexagonal bezel. The Crystal Sand dial complements the refined architecture of this luxury timepiece.
Made to Measure

The strap for this watch is made to measure

On the Audemars Piguet Royal Oak 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.

Book a consultation →

FAQ

Can a standard strap be fitted to the Royal Oak 77450BA.GG.1361BA.01?

No. The bracelet is integrated into the case: there is no standard lug to attach a replacement strap. The attachment is a structural part of Genta's original design, not a removable accessory. If you want to change the strap, the only option is to have one built to measure, working directly from the case.

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

I work on this watch exclusively at <a href="/pages/casati-booking">Casati Milano</a>, by appointment, at Via XX Settembre 15 in Milan. I take the measurements directly from the case at the bench and build the attachments by hand to integrate with the pink gold case. This cannot be done remotely, and adapters are not an option.

Which leather do I recommend for this model?

For a pink gold Royal Oak, I favour a smooth alligator in warm tobacco or cognac. The Royal Oak has a precise architectural character — the leather should follow it, not overshadow it. A polished alligator handles both the sporting spirit of the design and the refinement of the pink gold.

How long does a well-made strap last on this watch?

A quality leather strap, properly built, will easily last five to seven years of regular wear. Leather ages: it tends to lighten at the edges, soften against the wrist, and develop a patina that reflects the person wearing it. Care is straightforward: keep it away from prolonged exposure to water and condition it occasionally with a neutral cream.

What makes the Royal Oak such a radical design even today?

In 1972, Gérald Genta drew an octagonal case in steel — at the time a material associated with sports watches — and priced it as high watchmaking. It was a deliberate contradiction. I have seen many sports watches over the years, but few have such a consistent architectural logic between the bezel, the case and the bracelet. That is not an aesthetic detail; it is a constructive principle that still holds today.

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.

Request an appointment →

By appointment only · Milan

The atelier's website: casatimilano.com