Why this coin don't appears in Numista? [Risolto]

Here it is: https://en.numista.com/catalogue/pieces53250.html

Nicola

But this coin has the stamp of escudete, only circulated in Brazil.

Hello,

Coins in the catalogue are added by members. If nobody added it, then it is not there.
You can do it your self looking for the "add a coin ..." at the bottom of a catalogue page, and imitating the other coins of the country.
Look also at the instructions there https://en.numista.com/catalogue/contributions/instructions.php

Cita: "amss"​But this coin has the stamp of escudete, only circulated in Brazil.
​

​Yes, you're right, I didn't notice the countermark on the coin.
You can add it :)