Babe Ruth Signature Value?

I have an authentic Babe Ruth signature that is in mint condition. It is located on a boxing program that also contains a tribute to Babe who was a fan of the venue. About ten years ago I was on Antiques Roadshow, but they were hesitant in appraising it because they had never seen a signature like it. I am curious as to what a collector would pay for such a piece. I am not interested in selling, just inquisitive. Thank you.