Is there anyone that has any info on past error cards from TOPPS, SCORE, PRO SET, FLEER, etc. I have a interesting Fleer Ultra 1992 printed backwards. If anyone has any old TOPPS or other cards that are printing errors (photo of wrong player, backwards, etc.)please let me know. I know that PRO SET had cards that didnt have the NFLPA logo on the backs. but iam sure there are others.