One last note.....Looking at the position of the date compared to the S-14 "Scarface" variety, I would have to say that this is not the variety. It could be a RPD, but we would need much better pictures.
With that being said, the coin is peculiar and interesting. You will find that there are a number of Indian Head enthusiasts here willing to help you with determining what you have. We all learn from helping each other, so thanks for getting this discussion going.