Sideralis is structured around two especially extraordinary tourbillons and features three unique characteristics.

Firstly, both of those tourbillons are oversized, with cages measuring 14.9 mm-half as big again as the average. This is the largest assembly of two tourbillons ever to have existed. "Aside from our exacting chronometric standards, this approach adds a fascinating visual dimension tobuy longines watches; a touch of magic that we have decided to gift to lovers of fine watches, just so they can contemplate beauty and horological art in all its splendour," explains Jean-Marie Schaller, Louis Moinet's CEO.

Secondly, the two tourbillons are designed to be physically above the movement-above the dial, even. The two raised cages are large as life and wholly visible, revealing balance wheels with beautifully styled screws-and an absolutely incomparable aesthetic appearance.

Thirdly, thecheap patek pillippe watchesrotate in opposite directions. The continuous coming and going, side by side, is not just for stylistic reasons; the counter-rotation provides the motive power required for the star mechanism-the Sideralis complication.

And, for the to start with time ever, a complication is driven by a double tourbillon: a time dial, situated at 12 o'clock, comprising two discs, one atop the other. The top one features a tiny hand-painted picture. This hand-crafted marvel depicts the universe and its constellations of stars and planets, painted one by one on a dark blue sidereal background. The animation completes one counter-clockwise rotation every 60 seconds. At 12 o'clock on this upper disc there is a circular opening, through which can be glimpsed the 3 planets painted on the lower disc, observed to be rotating inside the opposite direction at the same speed. The feature represents a wholly new conceptual and artistic approach.

Through the opening, the lower disc reveals the planet Mars, the Moon, and Mercury in succession. "These three bodies have not been chosen at random," says Jean-Marie Schaller. "Each on the micro-paintings includes genuine dust from the heavenly body in question: a fragment of Mars, moon dust, and extremely rare fragments from the Rosetta Stone, whose scientific name is Sahara 99555. This stone has travelled across the universe to reach us: it's the oldest known to mankind, believed by the scientific community to have come from Mercury and to be four and half billion years old."

The inverted double tourbillon, powering an exclusive complication, is an unprecedented innovation, with two patents pending to protect it. The Sideralis caliber is also fully exclusive to Louis Moinet, mounted on a hand-painted aventurine dial that matches the universe depicted over the time disc. Sideralis comes in a 47.four mm grey gold case-and in a limited edition of just 28 watches.

And over and above purely technical considerations, Sideralis makes an unequivocal statement: Louis Moinet is perhaps the last fully-independent firm to be investing in new components together with the sole aim of inspiring awe among lovers of finetudor watches replica.