One thing you can do to try to help is to start looking up "Horace Partridge Team Signed Baseball", and start pulling auction results of team autographed balls on similar models. If you find one that's the same stamping you can at least have an idea on year based on what year team is on it. It's not perfect but can be somewhere to start and you may be able to narrow it down to a year or two if you can find enough results....PS, is that the "TH" of a Babe Ruth on the sweet spot peeking through on the last photo?
