SubGenius Star Cross used on many SubGenius membership cards in the late 1960s and early 1970s.
The SubGenius Star Cross is also known as the SubGenius Star. It is based on the SubGenius Cross or Early SubGenius Cross revealed to JoX the Bobtist and Toyalla in 1953, and the Symbol of Chaos revealed to Michael Moorcock in 1960. It represents the sun eclipsing the moon.
It is the most likely source of the Mark of Chaos (Chaos Undivided Star).