Thanks guys, I was not wrong in choosing this forum. It's a pleasure to be with you.
I have looked through thousands of photos before asking for help but I have not found anything. The friend who gave it to me knows nothing about forging. However, I am excited to know the origin and age of it.
My other anvil doesn't have any markings, but I know it's cast and weighs about 35 kilos (77 lbs.) I got it inside a water gallery (tunnel from which water is extracted).
It is appreciated that some people know Spanish, so if there is a technical word that does not have a translation, it is much easier.
Greetings and thanks