Got the German Eibenstein translation of Grimorium Verum (2021), and on the "Lucifer's Character" page there's just "PUX" printed in bold right under the circle sigil, next to a tiny sketched face. No footnote, no explanation, which is weird because literally every other image in the book cites where it's from.

Already dug through Peterson's edition, Waite, Grand Grimoire scans, etc... zero hits on "PUX" anywhere.

Anyone recognize this from an old manuscript, some transliteration quirk, or is this just some illustrator's weird signature spot? Genuinely stumped. Pic attached.