Joe Dimaggio and Mel Allen signed baseball

I acquired this baseball from my Mother's cousin that passed recently(god rest his soul).He went to a lot of games back in the day and personally got the signatures.This is the only example of these two signing a ball that I have found!I will be going to Antiques Roadshow in Tulsa Ok. to get the ball authenticated,but I know it's real!Too bad he didn't have them sign it in the"sweet spot"!