I've got a ton of old coins that I honestly don't know anything about. I've gotten into a kick lately of collecting the old style bills though. The ones that look similar to the $1 bill today. Since they redesigned all the $5, $10, $20, $50 and $100 bills, any time I get an old one of these I hold onto them. I've got probably $250 or more in old bills that I've put aside, I don't think I've gotten any $100 bills though. I don't know why I do this, but I know how I got started. My buddy said he was going to get one of each bill and put it aside for his daughter for when she got older thinking they might be worth something, but I've taken it a little further and kept every one I've received since.