Some player’s autographs can be worth thousands of dollars. The most valuable autographs are ones from players long gone, the ones who’s name grace the Baseball Hall of Fame, the ones that broke records, and the ones that are part of baseball history: players like Mickey Mantle, Babe Ruth, Joe DiMaggio, Sandy Koufax, Cy Young, Ty Cobb, Jackie Robinson, Lou Gehrig, Ted Williams… the greats of the game are worth the most. Some players only signed a handful of items and their signatures are extremely valuable. For example, Shoeless Joe Jackson was thought to be illiterate and signed his name to very few things… his signatures go for $20,000 to $100,000 depending on the item.
Modern baseball player’s autographs are usually worth less than players from long ago. Some players that are alive today sign very few things which make their signatures worth more. In recent times baseball card companies started releasing limited numbers of authenticated cards that can be highly sought after by collectors.