The 2021 Onyx Premium Julio Rodriguez Auto #30/100 #OPJR Seattle Mariners trading card is a limited edition collectible featuring the autograph of the player Julio Rodriguez. This hard-signed card is part of the 2021 Onyx Premium set and is authenticated by Onyx Authenticated. The card is made of high-quality card stock and is a part of the autographs insert set, making it a valuable addition to any baseball card collection. With its unique design and rarity, this card is sought after by fans and collectors alike.