Hi,
First, the right photo is upside down.
Secondly, the coin is very similar to
https://en.numista.com/catalogue/pieces192027.html. Recognized the coin easily, have 2 on hand and they were very hard to ID. Alternative link:
https://www.zeno.ru/showphoto.php?photo=137123 (found during my research).
You got this coin in São Paulo?
(That's where I got mine, and by the way, there were other threads made by brazilian collectors showing similar coins, including me on the day I bought mine)