I’m not aware of that one. There was an Oldsmobile Ninety-Eight Regency Elite produced from about 1991 to 1996 (and a Ninety-Eight Regency Elite Supercharged in '94 or '95), but I don’t think there was an Eighty-Eight Elite in any of those years. The Olds 98 Regency Elite wasn’t considered a separate model like the Ford Elite that Darryl Lict aptly described as hideous.
What puzzles me is the coffin-shaped logo on the keychain. It sure doesn’t sound like a Ford logo, unless it was something specific to that particular model. I think Mad should take a photo of his keychain logo and put it up somewhere (and I’d like to see the Fury and Dart ones, too, please :D).