Vintage Skybox 1998 Babylon 5 Series Four Basic Trading Card Set / Collector Cards 81 Card Base Set Sealed In Pack - Former Shop Stock. Released by Skybox in 1998 as part of their Babylon 5 series of Trading Cards. This fantastic Babylon 5 Base Trading Card set includes 81 trading cards that features episodes and characters from season four, each card depicts a colour still photograph from an episode from season 4, with information from the episode on the flip side. Former Shop Stock From A Closed Down Comic Book Shop. Mint Condition Cards, sealed in plastic pack. All orders received before 4pm Monday to Friday are shipped the same day.