Sister Virginia Muller had never heard of shortstop Honus Wagner. But she quickly learned the baseball great is a revered figure among collectors, and the most sought-after baseball card in history. And thanks to an unexpected donation, one of the century-old cards belongs to Muller and her order, the Baltimore-based School Sisters of Notre Dame. The sisters are auctioning off the card, which despite its poor condition is expected to fetch between $150,000 and $200,000. The proceeds will go to their ministries in 35 countries around the world. It has a big crease in the upper right-hand corner, and three of the white borders have been cut off. It has also been laminated. But even in poor condition, a T206 Wagner card is prized by collectors, said Chris Ivy, director of sports auctions at Heritage Auction Galleries in Dallas, which is auctioning the card. Read full story here on ESPN.