I'm like Daryl, I haven't heard of them before.
The only Spanish built guns I know are the AYA's & Laurona's of which I have one given to me many years ago by a cousin getting out of his firearms.
It is a boxlock SxS of unknown model type & definitely not in the same league as your beauty mate, it has a lot of wear & tear now but can still take a duck to two when it has to.
Sorry I can't help further