The main figure on the cover is adapted from the cover of World's Unknown (Marvel, 1973 series) #7, June 1974, the background is based on elements of the other covers.
A black and white concept sketch from Ray Harryhausen's The Golden Voyage of Sinbad. Koura inspects his miniature homunculus.
"Freely adapted from the screenplay by Brian Clemens".
"Freely adapted from the screenplay by Brian Clemens".
Adapted from The Seventh Voyage of Sinbad movie.