Darn it....
I'm afraid it is a repro.
See the link to REA below....
http://www.robertedwardauctions.com/...ugger-display/
Someone photocopied it, and then conveniently trimmed away the inscription portion (from DiMaggio to Halper). They did it so that the piece appeared to be die-cut that way. But if you look closely, you can see it was not originally or professionally cut that way. Too bad, and definitely done to deceive.
Hope you didn't buy it, and that this helps!
Mark