I didn't read the other thread, but the only thing I can add is beware of old boxes and old clothes if your items are not sealed in something. I had some items yellow badly in a very short period of time, one of which was my original Jetfire the only TF I saved from when I was a kid. I had the items unprotected in old boxes with clothing as padding. They were packed away in a closet. They had resisted yellowing for some 10-12 years while I had them and then while they where packed away they yellowed badly in just 1 year. I still don't get it.