1990s Corum Bridge Skeleton 18k Yellow Gold Triple Step Case 13.240.58An unusual Skeleton! A very rare and unpolished 1990s Corum "Bridge" Skeleton in 18k Yellow Gold Triple Step Case reference 13. 240. 58 in absolute perfect condition. The Corum Golden Bridge often referenced by collectors by its model number 13. 240. 58, is a striking example of Corums avant garde horology from the 1990s, part of the iconic Golden Bridge family that has defined the brands innovative spirit since its launch in 1980. Featuring a