Space Wolves symbol from Prospero Burns book?

[Lord Krungharr]

I remember there was a symbol the Rout carved into things in the book Prospero Burns, but I can't quite remember it, nor can I find it in my search today.  Can anyone draw it or post a pic for me?  I want to use it on a pendant and some models too.

 

[Noserenda]

It was an eye from memory, not sure it was ever depicted specifically but there are plenty of warding eye symbols from history, id go with an angular example for easy carving. 

[Etruscan]

There's an older thread on this from B&C, assuming it is ok to link it here?