Not an HP Lovecraft Elder Sign
This is an August Derleth Elder Sign, not HP Lovecraft.  Mr. Derleth didn't know that HP Lovecraft had described what an Elder Sign looked like in his correspondence with other writers, so he made up his own interpretation.  Lin Carter later tried to reconcile the two in his own writings by putting the HP Lovecraft Elder Sign inside the Derleth Elder Sign, and writing that he wasn't sure which part of the sign held the power.  All that said, the August Derleth sign is the pop-culture aware version of the Elder Sign.  Only us purists know it isn't the real one!
Rating: 3 stars