I have no idea of Peruvian silver, so I have taken some photos and posting them to see if anyone here can help.
First Llama, marked 925, makers mark looks like MM possibly a K after


The second Llama is marked 925 makers mark looks like MFC then PERU


The pots, which fit in the second Llama's holders have the makers mark of, again, what looks like MFC then PERU 925


Any help would be gratefully appreciated and passed on to my friend, who has had these for a few years, but was told by someone back then, they were 'not right' but never got round to investigating if they were or not. Thank you.