I just thought I would post these as examples of Hallmarks that are tough to decipher. Of course if anyone knows anything about them I would be happy to hear.
On the shadowbox ring, it looks as though others are selling items by Teresa. And I like them. The stones are well-chosen, it’s hard to make shadowboxes like this and the stampwork is very nice.
No idea who she is or was, though.
Here’s a another ring on Etsy.
https://www.etsy.com/listing/189573325/teresa-sterling-and-turquoise-navajo
Here’s a pendant by Teresa.
http://www.icollector.com/Navajo-Teresa-Sterling-Silver-and-Turquoise_i26132919
Another one here: