I was given several boxes of never opened RC Paper however it was very old but I don't know the exact. Only one pack of 25ct had a date written on it which said 1995. I opened the pack and it appears to be bad. The lady I got them from said she couldn't remember when she bought them but they were kept dry in her basement. The fiber based paper worked wonderfully and I was hoping the other boxes were fiber as well but alas they weren't. Is there an expiration date?