The product is a 2025 Topps Chrome Black baseball trading card featuring an autograph of player Coby Mayo from the Baltimore Orioles. This specific card is a Green Refractor parallel with a limited print run of only 99 copies, graded as a PSA 9. It is a valuable addition for collectors looking to add a rare and unique card to their collection, with features like being serial numbered and considered a rookie insert. The card is part of the Major League Baseball (MLB) set and showcases the player in a highly sought-after parallel variety.