Looks more like an Ancient coin, no? I don't know squat about them but this looks very interesting, to me anyways.
Fantasy piece? I couldn't find anything like it online. Also, it looks like there may be a casting seam (4-5 o'clock on the first photo.)
How about some more information. How did you acquire the item? What's the size? Place it next to a US quarter and take another picture. It doesn't look like any kind of legit coin IMHO