2017 Panini National Treasures Christian McCaffrey and Leonard Fournette Dual ROOKIE /10. This card is part of the Rookie NFL Combo Materials insert set, with a limited print run of only 10 copies. Made of card stock with a thickness of 55 Pt., this English-language sports trading card is a rare find for collectors looking to add unique pieces to their collection. The card showcases both players in their rookie seasons, making it a valuable addition to any fan's memorabilia.