Fake?

I was out metal detecting today and dug up this coin. Looks to be Spanish but I’m not sure. I’m also questioning its authenticity. I found it in NJ at an old Girl Scout camp. Any info would be much appreciated!
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while there may be some here that can offer an opinion, try posting on;
https://forums.collectors.com/categories/world-ancient-coins-forum
How deep you have to dig?
"When they can't find anything wrong with you, they create it!"
Weigh it. It doesn't look like silver to me
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