6.75x11.5x3" deep sealed box contains 1971 Mattel set. During the 1960s, Mattel had a great deal of success w/their "Major Matt Mason" action figure line and created "The Sea Devils" as a line of underwater explorer figures and accessories featuring the same bendable body style as Matt Mason had. Kretor figure could be attached to rubberband-powered Zark shark figure to swim underwater. Box has some lt. aging but remains Exc. w/contents Mint as sealed. Rare as factory sealed. As nice as they come.