I don't know if I should put this in the paper money forum or general discussion forums but here it is. This is more of a personal curiosity because it pertains to my job but we found these behind a wall where I work. We are remodeling because of new ownership. These have to be at least 20 years or older cause I have never seen them and I've been here for that long. I contacted the old owner to see if he wants to keep them and if not I think I'm going to throw them in my collection valuable or not.