I sometimes keep circulated versions but they aren't worth much over face value if they are well circulated, most people want crisp versions of them and won't buy a wrinkled up version since there are so many crisp uncirculated versions out there. There are the exception, if its a real old or low serial number then they will buy what they can get no matter what the condition. I guess if I keep mine long enough they will be old someday, so maybe my grandkids will make something off of them





















