Sports Cards Investor founder Geoff Wilson estimated the card could fetch between $2 million and $5 million at auction, while the Mavericks’ package is estimated to be worth around $840,000 to $1.2 million, most of it tied up in decades of non-liquid season tickets. Article continues after adArticle continues after adThe situation echoes a similar bounty offered by the Pittsburgh Pirates for Paul Skenes’ debut patch card in 2025. The finder in that case declined the season-ticket package, and the card went on to sell at auction for $1.11 million. Flagg had a historic rookie campaign, winning NBA Rookie of the Year after averaging 21 points, 6.7 rebounds and 4.5 assists across 70 games, and becoming the first teenager in NBA history to score 50 points in a single game. We also covered how a Topps card of Steph Curry as a Minion sold for over $20,000, part of the same wider basketball card boom driving huge sales across the hobby due to this current collection.