Roberto Clemente – 1955 Topps
Roberto Clemente was an outfielder in his team Pittsburgh Pirates and who is also included in the Hall of Fame. After notching his 3,000th hit in his entire career in baseball, unfortunately, he died in a tragic plane crash. His death caused a lot of people a heartbreak because no one knew this would happen during the peak of his baseball career. In 2012, a 1954 Topps rookie card of Roberto Clemente went for $432,000. Then, four years later, another card raised to $478,000, which is graded 9.
Stan Musial – 1948 Bowman
This 1948 Bowman card of Stan Musial is considered to be the oldest card that could be relatively affordable. The set immortalized the St. Louis Cardinals icon. There is a small chance that this kind of card would be in your attic but, it would be worth looking at. Is it not impossible to find an old card, right? At any rate, we recommend you to look at your attic for this kind of card could be sold for more than $1,000, depending on its condition.