Backstory:My husband used to collect old baseball cards. We would typically buy from a local dealer or at some shows.  However, about 20-25 years ago there was a guy having a yard sale, selling the contents of his recently deceased uncle. We stopped by, bought a cardboard box full of baseball cards and various memorabilia,  didn't really go through the box until we got home.There were a couple signed balls of players we didn't recognize, but at the bottom of the box there was a ball in a case,…See More