- Year
- 2024
- Condition
- Excellent
- Set
- Box and papers
- Size
- 42.70 × 49.94 × 16.15 mm
Set and condition
Complete set
This RM 66 Sapphire Case is accompanied by its original presentation box, warranty card and supporting documentation. The watch and included items are inspected by an expert watchmaker before sale. Additional photographs and video of this piece are available on request.
Original presentation box
Original presentation box and packaging.
Original papers
Warranty card and supporting documentation.
Inspected prior to sale
Reviewed for condition, completeness and functionality. Additional details and photographs are available on request.
Condition photography
Additional close-up images of specific areas are available before purchase.
Overview
Sapphire case with the red gold skeleton hand
The RM 66 architecture — the 5N red gold skeleton hand in the horns gesture, the flying tourbillon above it, the plectrum-shaped hour markers — inside a wholly transparent sapphire case, on a white strap.
The mechanical content is that of the RM 66: the manual winding calibre RM66 in grade 5 titanium, with a fast-rotating barrel at 6 o’clock giving 72 hours and a flying tourbillon at 12 o’clock whose cage carries no upper bridge.
Key details
Design and engineering
- Calibre RM66Manual winding flying tourbillon movement with hours and minutes, in grade 5 titanium. The movement measures 32.50 × 30.30 mm with a thickness of 5.68 mm, runs on 17 jewels at 21,600 vph (3 Hz) and provides circa 72 hours (± 10%) of power reserve. The tourbillon is 10.90 mm in diameter. Placing the barrel at 6 o’clock and the tourbillon at 12 turns the movement through 180° from Richard Mille’s usual layout, which the brand records as a first for it.
- Flying tourbillonThe cage is fixed at one end of its axis and assembled without an upper bridge, which Richard Mille specifies both for visibility and for the impression of weightlessness. The cage is engraved with a skull, referring to the RM 052 Tourbillon Skull.
- Skeleton handA skeleton hand in 5N red gold, index and little fingers extended, holds the movement in its grasp; the thumb and the two folded fingers are visible from the caseback. It is attached to the barrel bridge, machine milled and then microblasted, polished and finished entirely by hand by teams overseen by the Genevan engraver Olivier Vaucher. Richard Mille cites around 1,500 hours of research and development for the model, with a further nine months of work for the casing team. The design is credited to Cécile Guenat, the brand’s Creative and Development Director.
- Free-sprung balance with variable inertiaGlucydur®, two arms and four setting screws, a moment of inertia of 11.50 mg·cm², an angle of lift of 53° and a balance wheel diameter of 9.12 mm. The regulator index is eliminated in favour of four adjustable screws on the balance.
- Fast-rotating barrelOne revolution every six hours instead of seven and a half, which Richard Mille specifies for reduced periodic internal mainspring adhesion and a favourable mainspring delta curve. It sits at 6 o’clock.
- Hour markersIn 5N red gold PVD-coated titanium, shaped as guitar plectrums, screwed to the upper flange and hollowed at their tips, filled with Super-LumiNova.
- CrownA torque limiting crown in polished grade 5 titanium, with a spider in the form of a claw, rather goth in its inspiration, and a circular black rubber gasket. Richard Mille records more than 200 hours of development and 12 hours of machining and finishing for a single crown. The torque limiter prevents damage from forced winding, such as a broken winding stem or an overwound mainspring.
The reference
Technical specifications
| Reference | RM 66 |
|---|---|
| Calibre | RM66, manual winding flying tourbillon |
| Functions | Hours, minutes |
| Power reserve | Circa 72 hours (± 10%) |
| Frequency | 21,600 vph (3 Hz) |
| Jewels | 17 |
| Movement dimensions | 32.50 × 30.30 mm |
| Movement thickness | 5.68 mm |
| Tourbillon diameter | 10.90 mm |
| Balance wheel diameter | 9.12 mm |
| Baseplate and bridges | Grade 5 titanium, skeletonised |
| Tourbillon | Flying, at 12 o’clock, no upper bridge, skull engraved on the cage |
| Barrel | Fast rotating, six hours per revolution instead of 7.5, at 6 o’clock |
| Balance | Glucydur®, 2 arms, 4 setting screws, inertia 11.50 mg·cm², lift angle 53° |
| Crown | Polished grade 5 titanium, spider in the form of a claw, torque limiting, black rubber gasket |
| Case dimensions | 42.70 × 49.94 × 16.15 mm |
| Central sculpture | 5N red gold skeleton hand, attached to the barrel bridge |
| Crystal | Sapphire |
| Strap | White rubber |
Buying with HYPA
Purchase with confidence
- Original warranty card included, dated 2024
- Free insured delivery within Australia and Hong Kong · elsewhere quoted
- Payment by bank transfer
- Registered Australian dealerHYPA International Pty Ltd · Registered Victorian second-hand dealer, Registration No. SHD-0018017.
- Direct specialist supportSpeak with the HYPA team before, during and after the purchase.
- Rated 5.0 on Google · 11 reviewsFrom clients of HYPA International on Google. Read the reviews
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