I am no note collector but I do agree if that 8 was a 0 you would have something but not sure with the 8 being there it would add any value to the note. The 100's have to be special to be worth more than face because of their face value already but if it were a 1 or 5 it may add a few dollars even with the 8 being there. I am not a note collector and do not study their values or anything, this is just the things I have noticed about the higher face value notes