A three-dimensional chess board, the boards of clear acrylic with an aluminum stand -- 25x10x20in. -- accompanied by 10 assorted chess pieces of painted plastic and lathed aluminum -- used in the Ten Forward Lounge in Star Trek: The Next Generation, later appearing in Captain Sisko's quarters in Star Trek: Deep Space Nine, and in the re-created Ten Forward set in the final episode of Star Trek: Enterprise(11)

ESTIMATE: $800 - $1200