What is the bottom right symbol on Blavatsky’s personal seal?


I’ve been researching Blavatsky and I can’t seem to find out what the symbols on her personal seal are, particularly the bottom right. Anyone know what it is?

Seal: https://s-media-cache-ak0.pinimg.com/736x/6e/1c/25/6e1c25a1c85cd7d8603b18fa71f91595.jpg



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