The 1978 Topps #540 Steve Carlton trading card has been professionally graded by Sportscard Guaranty Corporation (SGC) and received a grade of 5. This vintage sports trading card features Steve Carlton, a Hall of Fame pitcher who played for the Philadelphia Phillies during the 1978 season. The card is a valuable collectible for fans and collectors of baseball memorabilia, showcasing Carlton in his prime and capturing a piece of baseball history from the late 1970s.