I can’t find this exact font of “Y” hallmark. My best guess is it was made by a Yazzie but I’m not sure.
Thank you for sharing. I couldn’t find this Y in any of my resources. However, this circa 1980s necklace isn’t really about the artist as it is the style. Chip inlay was huge during this period and many silversmiths were making the Native American Church symbol art with chip inlay. This is a very nice piece and in great shape. Even those coral cabs look great. Lots of people collect this style and if we had the necklace here it would be $1500 plus. Hope this helps.