Star Trek The Original Series Season 3 trading cards. This set was produced back in 1999 by SKYBOX & is in mint condition. This is a complete series consisting of 75 cards in all (#172 - #246). This card set gives the details that the Star Trek Original Series deserved. This entire set focuses on the Episodes of the Third Season, and includes such favorites as: The Enterprise Incident, Spock's Brain, The Paradise Syndrome & all of the others.