LM-52.50.20
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LM-52.50.20

Sideralis

Limited Edition of 12 watches

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Sideralis

Sideralis Evo is the first and only Double Tourbillon whose function is to power a watch complication – the first patent application of its kind.

To achieve this, two huge tourbillon cages, each with a diameter of 14.9 mm, have had to be designed. What’s more, they were positioned 1.75 mm above the dial; not only that, one has to rotate clockwise and the other, counter-clockwise (second patent application). And most importantly of all, they’ve had to be crafted from cutting-edge materials, so that they can be as light as possible (0.4 gr per cage) whilst still providing the force required to bring the watch complication to life.
The sidereal complication itself comprises two titanium discs, one atop the other, driven by an inverted gear system. The lower disc is hand-painted, and depicts three heavenly bodies in the cosmos: the Moon, Mars and Mercury. Louis Moinet has decorated each of these with authentic, exclusive meteorite fragments and powder. Mercury is the only one of the three for which the material’s origin is uncertain – despite which, it is the most valuable. Indeed, the extra-terrestrial Sahara 99555 material known as ‘Rosetta Stone’ is over 4 566 200 000 billion years old – the most ancient fragment in the solar system.
The upper disc features a hand-painted constellation of stars and planets on a dark blue background, and displays the movement of the heavenly bodies by rotating once every 60 seconds.
The openwork movement reveals its purest mechanical essence. Suspended in mid-air, the tourbillons power the stars and planets.
The avant-garde case, meanwhile, features an all-new, intricate design. The two side shafts are crafted from blocks of solid gold, sculpted and embellished with black zircons.

> More Technical specifications

Technical specifications

Sideralis is an interstellard inverted double tourbillon, powering an exclusive complication : A sideral mechanism.

  • Features and indications

    Double Tourbillon 60-seconds
    Hours & Minutes at 12 o’clock
    Sidereal complication

  • Dial and Hands

    Hour & Minute “Gouttes de Rosée” drew-drop hands
    Hand-painted aventurine dial with genuine dust from Mars, Moon and fragments of the Rosetta Stone (Sahara 99555)
    Hand-painted shooting stars
    Fleur-de-lys applique

  • Movement and Finishing

    Manual double tourbillon movement
    245-part LM46 caliber, fully exclusive and manufactured by Louis Moinet
    Winding: Manual
    Tourbillon cages: 1 rotation/minute
    Oscillations: 21,600 vibrations per hour
    Frequency: 3Hz
    Balance wheel: Glucydur
    Lines: 13¾
    Power reserve: 72 hours
    Jewels: 36
    Diameter: 37.60 mm
    Height: 9.85 mm
    Decoration: Satin-brushed baseplate and bridge flanks, Polished chamfers and countersinks, Sunburst Côtes de Genève motif adorning the bridges, Polished screw heads, Rhodium-plated bridges and baseplate and Polished Louis Moinet logo

  • Case and Strap

    Case: Original Louis Moinet® design comprising 53 different elements
    Material: 18K gold
    Diameter: 47.4 mm
    Thickness: 14.92 mm
    Water resistance: 30 metres
    Case back: Fitted with 6 screws, engraved with individual number and Louis Moinet symbols
    Crystals: Two sapphire crystals with non-reflective coating on both faces
    Distance between lugs: 24 mm
    Strap: Hand-sewn Louisiana alligator leather with alligator lining
    Buckle: 18-carat gold folding clasp with fleur-de-lys motif

Inverted Double Tourbillon
Designed to be physically above the dial, the oversized tourbillons rotate in opposite directions
Sidereal Complication
The complication is driven by the double tourbillon and displays successively The Moon, Mars and Mercury
Neo case
Sideralis comes in a brand new 47.4 mm 18K gold case, with open-work lugs