Vintage Signed Native American Silver Turquoise Coral Ring 5 1/2

Vintage signed Native American Southwestern style turquoise and coral ring. This is a small ring measuring at a 5 1/2. As you can see in the photo, this is signed with an M and possibly a T but I am not positive of the designer. I went down a rabbit hole trying to find it! Pre-owned. Please ask if you have questions.