Help with hallmark 2 'R's , mirror image and joined

[jennilea]

I would like some help identifying the NA artist who uses this hallmark. It looks like 2 capital R's, joined together, so that they are a mirror image of each other. The hallmark could be 2 heads and 3 legs... I am really reaching here! :-)
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[dancermom09]

I think that is the hallmark used by Reuben Rose, an Anglo who taught taught art at Santa Fe HS. This is in his style.

[tatsnbikes]

Trh looking at a different angle. I believe it is EB conjoined with the E being backwards. Eula Mae Begay. Navajo. Beautiful work!