Tricky - there's nothing much left to begin the ID process with.
How big is it?
What metal is it? It looks like it could be either silvery or coppery, from those pics.
Id there anything visible on the other side? all three of the above pics appear to be the same side.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis