As Susanne says, Tamarasha is used in the "Atlantean" Kofutu Healing System but was also introduced into some Reiki lineages, possibly via Mary Shaw, an Australian who also practiced a form of Seichim (?Isis Seichim).
I was given the tamarasha symbol by my first Reiki teacher, whose lineage came via Phyllis Furumoto and then through Australia, which is I think where the tamarasha was introduced. I was first attuned in 1998 so the symbol was in use in some Reiki styles by then.
I no longer use it though.
Ai to Hikari
***********************Reiki: pure & simple
The divine is not something high above us. It is in heaven, it is in earth, it is inside us. (Morihei Ueshiba)
Reiki is what happens when you make friends with the Universe! (Colin)
Ki flows, Reiki glows! (Colin)