Patek Philippe
Nautilus 5712GR-001
Patek Philippe Nautilus 5712GR-001: strap made to measure on the watch at the Casati Milano atelier, by appointment.
Technical Specifications
Patek Philippe 5712GR-0015712GR-001
Patek Philippe caliber 240 PS IRM C LU Hours, Minutes, Small Seconds | Date | Moonphase | Power Reserve Indicator
The Heritage
The strap for this watch is made to measure
On the Patek Philippe Nautilus 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 Patek Philippe Nautilus 5712GR-001?
No. The bracelet is integrated directly into the case: there is no standard lug to attach a conventional strap. The attachment geometry is proprietary and requires a bespoke approach. In the atelier I build the strap on the watch itself, starting from the actual case.
How does the bespoke strap service work for this Nautilus?
I work through <a href="/pages/casati-booking">Casati Milano</a>, by appointment only, at Via XX Settembre 15 in Milan. I take measurements directly from the case at the bench, with no approximations. Every attachment is shaped by hand to follow the original curves of Genta's profile.
Which leather do I recommend for this model?
I prefer Mississippi Alligator with a large scale. The Nautilus has a dual character — sporting in shape, elegant in materials — and alligator holds both sides without compromising either. It ages with personality rather than fading over time. For those who want something that feels lived-in from the start, natural Barenia would be my second choice.
How long does a well-made strap last on a watch like this?
A properly constructed strap, made with top-grade leather and solid stitching, lasts five to eight years of regular wear. A great deal depends on how it is treated: kept away from water, allowed to breathe between uses. Alligator and Barenia do not deteriorate — they transform, taking on the character of the person wearing them.
What makes the complication on the 5712GR-001 technically interesting?
This Nautilus carries both a moon phase and a power reserve indicator — two complications sharing a case built around a precise, angular geometry. It was never a case designed to house complications: Patek made it work without altering the proportions of the original 1976 design. That is the detail I find most honest about this watch.
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