Native American jewelry

I recently purchased from an estate sale several pieces of Native American jewelry that I believe to be old and Navajo. One is a watch with a clasp lock with the markings of a K and what looks to be an i with a little hook at the end pointing to the left, could be Kj. I believe it is the marking for Tracey Knifewing. Does anyone know about this artist? I also have a mans ring with the markings of what looks to be LRM? Does anyone know who this may be?

Pictures of the hallmark and work are a great help in identifying the work, thanks for sharing.