I agree, looks very similar, right down to the curved jaw serrations. RAE are a Canadian brand right? Can't remember if I read that correctly somewhere, but if they are, does anyone happen to know if they were made right across the lake from Erie Castings? Or is it not Canadian and just another company using that body like Reed, Yost, etc? Regardless, I think it's connected to the family somehow for sure.
Edit: Looked at the pictures again...did 4" Reeds ever come with dual swivel lockdowns?...The majority of my vises are solid base, and all but the 2C are for the Reeds.