My prized baseball possession, handed to me personally by Hall of Famer Bob Feller during spring training in Tucson 35 years ago. I had been walking on the warning track of one of the practice fields and five balls in a row rolled up to me during BP and I threw all of them back to Mr. Feller and he threw this one back to me and said “Keep it kid you’ve done your work today.“ I was 35 years old and did not think I was a kid but now, oh how I wish I were that kid. So is this just a dirty old ball that’s been used a lot or could some of this be due to pitchers practicing illegal pitches and leaving trace‘s of their handywork on the ball?