[Bigdaddy]

How about the "I bought a stack of old books and found these cards pressed between the pages" find?

Or the "When my grandfather was a wee lad, Babe Ruth came through his home town on a barnstorming tour and he got the Babe to sign this ball" find?

Or the "My mother used to date Mickey Mantle in high school and she kept this lock of his hair" find?

Or the most likely, "I bought a storage unit and found this trove of '89 Bowman and Score" find?