This is the official STAR TREK Tridimensional Chess Set based on the futuristic chess game seen on board the great starship the U.S.S Enterprise and first introduced by Captain Kirk and Mr. Spock in the classic episode "Where No Man Has Gone Before". This unique chess set was issued in 1994 by the Franklin Mint and was shortly discontinued making it one of the most highly sought chess sets by collectors. The Star Trek Tri-dimensional chess sets are becoming increasingly difficult to find and always increasing in value. Because these chess sets are previously owned, we have established six grades from 1A (mint condition) to 2C (very good condition). You will find complete description of each grade when you click through the item numbers below.