@clarkvalentine@jmstar Now you guys sent me down a rabbit hole learning about the sonnenrad!
Apparently the Nazi one is supposed to use the Sig rune, like the SS logo. A historical antecedent that might be claimed for the Hermetic Magic symbol would be the Zierscheibe (https://en.wikipedia.org/wiki/Zierscheibe), which is also evocative of the Art symbol for Perdo in the game.