OK. With the weight confirmed at about 7 grams too heavy, and it looks real to me except for the color, I'm stumped. Sorry. I vote unknown.
I have one last straw to grasp at. It could be that someone ground off the obverse of one Ike dollar and the reverse of another and stuck the two pieces together to create a third, a little bit too heavy. Do the edge reeding lines appear to be correctly aligned or are there misalignments visible?