I have seen a couple of these on ebay before with similar pictures. I have a bunch of Malone Autos in my bucket that you can use to compare the signature to yours.
Karl Malone 2384/4244 http://s267.photobucket.com/user/bballkm...Collection
Ryne Sandberg http://s267.photobucket.com/albums/ii312...berg%20PC/
Ryne Sandberg http://s267.photobucket.com/albums/ii312...berg%20PC/