The year of this coin is wrong. I will explain:
This is a commemorative coin about the Portuguese Republic Implementation, that happens in October 10, 1910. And that information appears in the coin, but there is no information about the year that this coin was created.
But I found three portuguese sites that all indicates that this coin was created in 1914.
Look the websites:
http://numisrepublica.blogs.sapo.pt/2363.html
http://www.portugalmoedas.com.pt/artigo.aspx?id=921
http://moedasportuguesas.com/index.php
In the last one, the page is not direct to the coin you will need to choose the fooling folders:
"República - Escudo" >> "Comemorativas" and it's the first one "1914-República"
Probably there is more information about that, but I believe that this info is enough to explain my point.
Thank you :)