This is the Harry Winston Histoire de Tourbillon 4 which was unveiled during Baselworld in April. It is the fourth timepiece in a five piece series of complicated tourbillons. The Historie de Tourbillon is a tri-axial tourbillon, housed inside a 47 mm by 21.7 mm case. The tourbillon rotates on its three axes in a sapphire crystal bubble located at 6 o’clock on the dial. Read the full article HERE.