Cooper Flagg 2025 Topps Now Dallas Mavericks NBA Debut Rookie Card #6 graded PSA 10 Gem Mint captures a major early-career milestone for one of basketball's most highly anticipated young stars. Topps Now debut cards are event-driven collectibles that mark a specific moment in a player's career and this NBA Debut issue has strong rookie-year significance. Professionally graded by PSA with certification number 149393633 this Gem Mint example offers premium condition display-ready protection and strong appeal for Dallas Mavericks fans and modern basketball rookie collectors.