Source? Jimmy's web site makes no mention of him having passed, and neither does the IBHOF or anything else I've just checked.
Jimmys now gone, still LaMotta as oldest world champ? Terry Downes is Britains oldest surviving champ, LaMotta must be world's champ? Who after him? De Marco?
It's weird to think one of the worst human beings of the era, who took on some of the worst beatings possible lives for so long and still has all his marbles when you had big, healthy guys like Max Baer who only reached 50. Duodenum's theory seems about right, Lamotta probably died a while ago, Death is just too scared to tell him, hell couldn't handle the Raging Bull.