That seems really close but without the obverse legend that includes the Kings names, I'm going to assume there are a few options left?Nice find! The shield looks to be the arms of Portugal. I think it is a ceitil. I don't know the exact variety but here is a start-
https://en.numista.com/catalogue/pieces35884.html
Yeap, I agree we have narrowed it to PORTUGAL but now we need to focus on the lettering.Almost the same, but the end of the towers on his coin don't touch so maybe its this variant but with less waves under the towers
View attachment 1566525
https://en.numista.com/catalogue/pieces107070.html