The 2020 Panini Chronicles Gridiron Kings Justin Herbert #GK-3 (RC) is a highly sought-after football trading card featuring the rookie player from the Los Angeles Chargers, Justin Herbert. This insert card from the Gridiron Kings set showcases Herbert in a unique design, making it a valuable addition for collectors. Manufactured by Panini and part of the 2020 Panini Chronicles series, this card is a must-have for fans of the National Football League looking to own a piece of the promising young quarterback's early career in the league.