Ken Griffey Jr. – 1989 Upper Deck Rookie
In the ’90s, people believed Ken Griffey Jr’s 1989 rookie card in the Upper Deck would become one of the most expensive cards in history. Despite that belief not becoming a reality, the card remained one of the most iconic cards for the past 30 years. A copy of the card with a good grade can earn $400.
Willie Mays – 1952 Topps
Besides the famous Mantle card, the 1952 Topps featured another valuable card. It starred New York center fielder and Hall of Famer: Willie Mays. Though it’s not as valuable as the Yankee slugger’s card, the Say Hey Kid’s card priced as $478,000 in a 2016 auction.