Mick Kelleher, a former MLB player who made his debut with the 1972 St. Louis Cardinals, has signed an index card, making it a valuable collectible for fans of baseball memorabilia. This unique item offers a direct connection to a piece of sports history, with Kelleher's signature adding authenticity and sentiment to the piece. Perfect for collectors looking to add a rare and special item to their collection, this autograph showcases a piece of baseball nostalgia from the 1970s.