They are classified as F66 in the American Card Catalog. In that condition I would put their value at about $50-$100 each. I wouldn't bother getting them authenticated if it were me. They are real and they will only grade a 1-2, or 3 on the outside. Some of them were Voided for a contest I believe. Or maybe it was admittance of some type, not sure. As for preserving them, put them in some penny sleeves in top loaders of archival quality and you should be good. If you send me a private message I will send you some...I have extras.
