This image is adapted from a panel of art on page 3 of the story Citadel. The star on the cover is reminiscent of Page's "Silver Star" branding from the late 1960s.
Flash Gordon; Dr. Hans Zarkov; Dale Arden; Auralon (first and last appearance); Ming
Synopsis
Flash Gordon arrives at Citadel on Mongo where Queen Auralon is willing to hand Flash, Zarkov and Arden to Ming. However, Auralon is willing to betray Ming for the greatest brain on Mongo, Dr Zarkov, because she believes in science more than working with Ming.