You have found a rare collectable treasure!
You are looking at a Clint Howard as Balok A13 Autograph Trading Card from Star Trek: The Original Series: Season 1 "The Corbomite Maneuver".
This cast members appeared in Gene Roddenberys Star Trek 1966 Premiere Series. The actor also appeared in numerous movies and TV Shows.
Clint Howard is known for their roles in The Water Boy | Apollo 13 | Star Wars Solo and Gentle Ben.
Produced by Skybox in 1997, these autograph cards are embossed with the Skybox logo for Authentication.