Your rings are horse tack.
The one with the blob looks like part of a bit.
The bolt and washer may have come from some part of a wagon.
I need better pictures of the other parts to get a better idea of what they are.
Pictures from the side and of the backs.
I would like to see the other side of the coin item too.
Thanks hunting dog. I have to figure out how to post new pics on this thread, but the coin and the rectangular piece look exactly the same on the other side
Ok
If your coin is about the size of a US quarter then it is most likely a Pachinko token.
And your rectangle piece looks like a reed for a squeeze box.