The 2026 Topps Series 1 Flagship 75 Years Of Baseball Insert 10 Card Lot is a set of sports trading cards featuring various Major League Baseball players such as Juan Soto, Mickey Mantle, and Roberto Clemente. Manufactured by Topps in 2026, these original cards come in standard size and are made of card stock. The set includes 10 cards with features like inserts and commemorates the MLB World Series. These cards are an ideal addition for any baseball card collector looking to celebrate 75 years of baseball history.