A skull built into the movement, and how the RM 52-01 differs from the RM 052 before it.
Richard Mille's first skull tourbillon was the RM 052 of 2012, made in 21 pieces. On that watch the skull is the movement's structure: Richard Mille describes the baseplate and bridges as a grade 5 titanium skull whose upper and lower jaws hold the jewel of the tourbillon cage, with crossed bones, after a pirate flag, carrying the movement in the case.
The RM 52-01 followed at Baselworld 2013, in 30 pieces. It kept calibre RM052, a manual-winding tourbillon showing hours and minutes with about 48 hours of reserve, and changed what surrounds it: a case of TZP ceramic for the bezel and case back with a caseband of carbon nanotubes bonded in black polymer, and a skull sculpted from 5N red gold and bevelled by hand over a PVD-treated titanium baseplate. The case measures 42.70 × 50.00 × 15.95 mm and is water-resistant to 50 m.
Later RM 52-01s in coloured Carbon TPT and Quartz TPT with a titanium skull, like the blue one photographed here, are reported by dealers but not on Richard Mille's own pages, and in 2019 a single RM 52-01 was made in brown sapphire. So the case and skull metal are the first things to name. Availability and timing are confirmed for your request before you commit to anything.
- The skull is part of the movement, its jaws holding the tourbillon
- Calibre RM052, manual tourbillon, about 48 hours
- 2013 launch series of 30, ceramic composite case, 5N red gold skull
- Sourced to your brief; availability confirmed for each request