A flying tourbillon inclined at a 30-degree angle inside an original sapphire porthole: to realise this, de Grisogono has technically and aesthetically modified the design of its iconic Instrumento N°1, developing a new case with redesigned proportions (59.2 x 33 x 14.99 millimetres), composed of a precious metal frame and sapphire crystal and with an opening at 6 o'clock that reveals the off-centre tourbillon. The cage is framed by a three-dimensional sapphire lens that amplifies its depth. The movement, the TB 31-00 automatic calibre, is equipped with a double barrel guaranteeing a 72-hour power reserve and features a skeletonised plate and bridges, coated with a matt black PVD treatment. The case is in pink gold and the crown is set with a black diamond.
