The Tambour Moon Flying Tourbillon “Poinçon de Genève”, the first watch collection with a sapphire case to bear Geneva Seal, has been expanded this year with two new timepieces graced with the expert craftsmanship of La Fabrique du Temps Louis Vuitton. There is great potential in using cases cut from a block of coloured synthetic sapphire.
Virtually unalterable like pure gold or platinum, with a hardness only surpassed by diamonds, synthetic sapphire is one of those precious materials over which time has no control. La Fabrique du Temps Louis Vuitton immediately grasped its potential, using it to protect the LV90 calibre from external stresses. It provides an impenetrable barrier to all but the eye and ensures that the exceptional openwork movement, regulated by a flying tourbillon, will have a virtually unlimited life span, provided that it receives regular care.
To obtain a case middle, a case-back and a bridge bearing the LV logo in a strictly identical colour for each watch, a cylinder, 50 mm in diameter and 150 mm long, had to be extracted from the centre of a block of mass-tinted sapphire from Japan weighing nearly 200 kg. Each component is therefore cut from this sapphire crystal bar using diamond tools to obtain the pieces final dimensions. All the elements are then delicately polished to reveal their transparency and the richness of the two meticulously selected colours.
Constant and meticulous attention is given to every detail throughout the entire manufacturing process. The 12 letters forming LOUIS VUITTON are engraved on the outer side of the concave case middle of the Tambour Moon, which appeared in 2017. Like the indexes on the bezel flange, whose design gives the timepiece a very open face, they are delicately lacquered in white for the green sapphire version, and black for the yellow sapphire model.
The two horns, in black PVD-treated titanium, are attached by screws. Finally, to protect the delicate movement from external stresses, this 42.5 mm case with a thickness of 9.9 mm is guaranteed water-resistant up to 30 metres. This is achieved via a transparent gasket positioned between the case middle and the screw-down case back.
Everything on this timepiece has been carefully considered, right down to the appearance of the hands, which are light and hollowed out, floating over the circles from which they seem to spring. Like the previous versions of the Tambour Moon Flying Tourbillon Sapphire, these two spectacularly light and transparent watches are, to date, the only models in the world to have a sapphire case and bear the Geneva Seal. Their sheer complexity means they are produced in very limited series every year.
