Part of the "RAY HARRYHAUSEN SIGNATURE COLLECTION". From the back of the Jacket:
Honored with the Gordon E. Sawyer Academy Award in 1992 by the Academy of Motion Picture Arts and Sciences, Ray Harryhausen is recognized throughout the world as a master of special effects. He has pioneered and developed many of the stop-motion techniques that have become today’s industry standard. The Ray Harryhausen Signature Collection pay tribute to the genius of this great filmmaker.
The back jacket also contains liner notes regarding the production of the film.