You have found a rare collectable treasure!
You are looking at a IronE Singleton as T-Dog A5 Autograph Trading Card from The Walking Dead Season 3 Part 1.
This cast members appeared in Robert Kirkmans Comic Book Series The Walking Dead. The actor also appeared in numerous movies and TV Shows.
IronE Singleton is known for their roles in The Blind Side | Justice and White Man Black Man Jew Man.
Produced by Cryptozoic in 2014.