Mantle made a lot of money during his career, but he was no businessman. However, he didn’t lose any money due to poor investment choices. His baseball cards were highly sought after at the start of the 1980s, as well as other baseball memorabilia.
A signed Mickey Mantle baseball value ranges anywhere from $500 to $800. In 1988, he also opened Mickey Mantle’s Restaurant & Sports Bar, which he didn’t run himself, ; he left it to the responsibility of others. It is located at 42 Central Park South in New York, by the way.