Limited Edition of 88 Pieces. Corum Watch Bubble Magical 52 Matteo Ceccarini Limited Edition L390/03317. Corum revisits the shape of its acclaimed Bubble with a fresh pair of eyes, taking it to new, Big dimensions. The new watch is the result of a partnership between the La Chaux de Fonds watch brand and DJ and composer Matteo Ceccarini. Presented as a limited edition of 88 pieces, this Bubble is striking thanks to its intense, piercing oceanic gaze. Enhanced by 3D technology and the watchs famous domed sapphire crystal, this memorable eye leaves a lasting impression on a dial free from numerals.