The 1993 Star Trek SkyBox Master Series Exelsior Prototype trading card is a rare and sought-after collectible for Star Trek fans and trading card enthusiasts. This non-sport trading card features the iconic Excelsior spacecraft from the popular sci-fi franchise, manufactured by SkyBox in 1993. As a promo card from the Star Trek Master Series set, it holds value for collectors looking to complete their collection of original Star Trek trading cards from the TV show "Star Trek: The Original Series."