Any ideas about this copper? medieval or 1600's coin?

It seems to be out of copper and its size is about the same of a US quarter.
Hard to tell where is it from with so many initials and a crown!

As always, any insights or hints are quite welcome!

¡Gracias!

 

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Looks like a spanish maravedis cob...16th century? Although most I have seen look far rougher than this one, barely look like coins.

 

Thanks! Spain was my first guess too.

 

I believe that counterstamp was only used in 1659 and valued at 4 Maravedis.

 

Thank you!