Abrac
I think I may be getting closer to solving this riddle. I'm fairly confident the letters represent the French words Terre(Earth), Aire(Air) and Eau(Water). But there is still one mystery. I believe the remaining glyph is supposed to represent Leo or "Fire." If so, what could the O stand for? Any thoughts?
Through the magic of Photoshop I was able to rotate the image to show how it would look if the correspondences are lined up.
Image
Through the magic of Photoshop I was able to rotate the image to show how it would look if the correspondences are lined up.
Image