The 2021 Panini Obsidian Color Blast Black #CB12 DK Metcalf SSP trading card is a highly sought-after collectible in the sports trading card market. This rare card features a black parallel variety and is part of the 2021 Panini Obsidian set. It is signed by DK Metcalf and graded as a 9 by Professional Sports Authenticator (PSA). The card is made of 20-point card stock and showcases a unique insert design, making it a valuable addition to any fan's collection.