Spanish or Mexican silver


I need help identifying this piece. I acquired while thifting. Its marked “recuerdo de Mexico with FM in the center, Plateado” I’m curious if the item is solid silver or closer to sterling or just plated. I know Plateado translates to silver and silver plated. I’m not familiar with Spanish silver so any information would be appreciated.

I would assume absent any other marks that this is silver-plated.