I have this coin that I've had for awhile. The obverse and reverse are both the same, since a picture is worth 1000 words, here's 3.
It's a fantasy piece that uses the Spanish coat of arms (frequently seen on actual coins) as a model.
What's it made out of? Maybe it's from a toy or game. It's not a "fake," if it's not trying to imitate something real. There's no date or anything on it.
I'm not sure what it's made out of, in comparison to a walking liberty half dollar, it's barely bigger than it, in both thickness and diameter. it weighs ~17.7 grams