Corum Bubble 47 Squelette Watch In Bright Colors For 2017 Corum by wholesalewatches - December 28, 20170 In 2015, Corum Tourbillon Watches revived its popular Bubble watch with three new models. One of them was the Corum Bubble Skeleton. The Bubble watch has become something of an icon for Corum and it's not hard to see why - especially with that domed sapphire crystal. For 2017, Corum