Hi,
I cannot help too much! I think the region you suspect is right, but nearly everything from that wider area is called "Tibetan". In fact very few "Tibetan" things on the internet are actually from there. Yours could be maybe from Nepal, there they do a lot of metalwork with wire decoration and corals and so on. I do not think your figures are very old, more likely they are some kind of souvenir... Here is a tiny example of such a piece from Katmandu: