Look like a damaged version of one of these (scroll down a bit) https://en.numista.com/catalogue/espagne-1.html#c_espagne7347 Based on weight a 1 reale, but underweight. Could be due to damage, but base metal fakes are also very common.
That's it. It is a very worn coin & damaged coin so I think genuine and the box where I found it was bought from an experienced collector. Thanks for the help.
