Research on Crowley: Wandering The Waste had me scrolling through a copy of Fred Gettings’ Dictionary of Occult, Hermetic and Alchemical Sigils for interesting squiggles which Roy Huteson Stewart might be able to incorporate into the backgrounds and page layouts of the comic. And would you look at what I found on page 201, given as Jerome Cardan’s 1557 sigil for the planet Saturn.

Looks familiar.

Further net-based mooching about led me to this excellent article about the symbol, and Jimmy’s use of it.