Welcome to the forum. A Navajo artist by the name Larry Cisco use to sell a stacked fetish necklace like this in the 90s. Couldn’t find an image in a google search but purchased a number of them from him. He did a wrap like that at the end instead of hook and eye.
Wow that is quite a necklace! I’d love to see a photograph with it worn, if you have time. I have found that so many of these pieces look so unwearable … until worn and then it looks spectacular!