Limited edition of 50 pieces.

Caliber RM59-01: manual winding tourbillon movement with hours, minutes.

Dimensions : 50.24 x 42.70 x 15.84 mm.


Power réserve: irca 48 hours (±10%).

Skeletonised titanium baseplate
he baseplate has been finished in grade 5 titanium, a biocompatible, highly corrosion-resistant and remarkably rigid alloy, which enables the gear train to function effortlessly. The alloy is 90% titanium,6% aluminium and 4% vanadium. This combination further increases its mechanical properties, which explains its frequent use in the aerospace, aeronautical and automobile industries.
The skeletonised baseplate and the bridges have been subjected to intensive and complete validation tests to optimize their resistance capacities.

Anticorodal PB109 aluminium bridges
This aluminium alloy is composed of aluminium, magnesium, silicon and lead.
It provides the movement with great flexibility and improved shock-resistance.
Its green colouring is achieved through eloxing, a treatment using anodic oxidation. This forms a layer of crystals that retains green dyes. The yellow part of the bridge is hand-painted.

Free sprung balance with variable inertia
A free sprung balance with variable inertia and a terminal-curve spring guarantees greater reliability in case of impacts and during movement assembly and disassembly, hence better chronometric results over time.

Fast rotating barrel (6 hours per revolution instead of 7.5 hours)
This type of barrel has the following advantages:

• The phenomenon of periodic internal mainspring adhesion is significantly diminished and performance is thus enhanced,
  
• Provision of an excellent mainspring delta curve with an ideal power reserve/performance and regularity ratio.

Barrel pawl with progressive recoil
This device permits an appreciable winding gain (circa 20 %), especially during the start of winding. It also aids in the even distribution of the mainspring’s internal tension.

Winding barrel teeth and third-wheel pinion with central involute profile
The wheel with a central developing profile and a pressure angle of 20° promotes rolling movement more effectively, compensates differences between centers, ensures excellent torque transmission and a distinct improvement in performance.

Spline screws in Grade 5 titanium for the bridges
These screws enable better control of the screwing torque. Hardly affected by physical manipulations during assembly and disassembly, they also age well.

• Movement dimensions: 30.50 mm x 28.70 mm
  
• Thickness: 5.20 mm
  
• Tourbillon diameter: 10.90 mm
  
• Balance wheel diameter: 9.12 mm
  
• Number of jewels: 19
  
• Balance wheel: Glucydur, with 2 arms and 4 setting screws, moment of inertia 11.50 mg.cm², angle of lift 53° - Frequency: 21,600 vph (3 Hz)
  
• Balance spring: ELINVAR by Nivarox®
  
• Shock protection: KIF ELASTOR KE 160 B28
  
• Barrel shaft in nickel-free Chronifer (DIN x 46 Cr 13 + S),
  with the following characteristics:
  stainless – non-magnetic – tempered

Case
The RM 59-01 case is made from a translucent composite composed of injected carbon nanotubes that offer the perfect form of shock-protection for the movement and its central tourbillon.
The carbon nanotubes are extremely resistant (200 times more resistant than steel) and very light.
They are more resistant to impacts than carbon fibre thanks to their structure, which features an exceptional surface/volume ratio. The nanotubes are injected into a mould containing a green-yellow polymer. This gives the case its final shape and translucency.
Its drawn-out shape between 2 and 5 o’clock stops the torque-limiting crown from rubbing against the sprinter handle.
The tripartite case is water resistant to 30 metres, ensured by two Nitril O-ring seals.
The case is assembled with 20 spline screws in grade 5 titanium and abrasion-resistant washers in 316L stainless steel.

Spline screws in Grade 5 titanium for the case
This permits better control of the torque applied to the screws during assembly.
These screws are therefore unaffected by physical manipulation during assembly or disassembly and age well.

Torque limiting crown
This additional security system prevents from accidental overwinding, which could cause damage to the winding stem or putting extreme pressure on the mainspring barrel.

Interior flanges
Upper flange in Aluminium and lower flanges in grade 5 titanium.

Crystal

• Bezel side: in sapphire (1,800 Vickers) with anti-glare coating (on both sides)
  
• Thickness: 1,50 mm
  
• Case back: in sapphire with anti-glare coating (on both sides)
  
• Thickness: 1.20 mm at the centre and 1.95 mm at the outer edges

Movement

• Baseplate in grade 5 titanium microblasted PVD treatment
  
• Microblasted bridge in Pb109 aluminium, eloxed and hand-painted
  
• Hand-polished beveling
  
• Microblasted milled sections
  
• Stretched upper surfaces
  
• Polished sinks

Steel parts

• Wire-drawn and microblasted surfaces
  
• Hand-polished beveling
  
• Long strokes above
  
• Long strokes on sides
  
• Polished sinks

Profile-turning

• Polished and lapped ends
  
• Burnished pivots

Wheels

• Concave chamfering with a diamond tool
  
• Circular decorations on the front surfaces
  
• Gilding (before cutting the teeth)
  
• Minimal corrections are made to the wheels to preserve