I have a 2013 Topps Tribute Felix Hernandez on card autograph numbered 07/50. The card was a mail in redemption and is still in the top loader and sealed with a tops sticker. It books at $50 and I would be loping for a like valued auto or game used card from Harmon Killebrew, Mike Piazza or Sandy Koufax that I don't have. I don't have a lot of Koufax so that one would be easy. Thanks for looking.