Sethian sigil or Dark Mark?

Coming from another thread in this forum where the Dark Mark and other possible symbols of the Asetians are being discussed, it came up a question to my mind.
Do you think that the Sethians also have a Dark Mark? If yes, what kind of sigil would they tattoo and use? Any ideas on how the most sacred symbols within the Red Order of Seth are?

I doubt they have anything as beautiful and magickal as the Asetian Dark Mark, however I am highly guessing that they do have a symbol that they tattoo on their body as a symbol of their family. I am thinking that the symbol Was is associated with them.

Aghrab

Since we don't have any sources, we can only imagine, my head go to the geometry!