The ball is probably worth between $25 and $50. However, in the sports memorabilia market things are always subject to change. My recommendation would be to hold onto to it for a few years to see how his career goes. However, there are other factors which would ultimately dictate the overall value of the ball. Too many to list (That could be a forum in itself!) Any ways, I hope this helps!
:drinky: :drinky: :drinky: