Star Trek Tri-Dimensional Chess Set, 1994 Original Limited Edition by the Franklin Mint The Official Star Trek Tri-Dimensional Chess Set! Includes Certificate of Authenticity, Custom Tri-Dimensional Chess Rules and Strategy Booklet, Photo of Captain Kirk and Mr. Spock Playing Tri-Dimensional Chess and Custom Foam Packaging to Preserve this Beautiful Work of Art! Crafted of Three Larger 4.25 inch Playing Boards plus Four Smaller 2.13 inch "Moveable Attack Boards"! 24kt Gold and Sterling Silver Plated Chess Pieces!