I would like some help in identifying this hallmark, believe Navajo

Identifying & Discovering
1

This mark is on one of my mom’s estate who collected over 35 yr. It is very faint but simple so I drew it out.

<img src=/uploads/db1846/original/1X/a9207972374f5b07490fdec7473525dd7e465b98.jpg">

<img src=/uploads/db1846/original/1X/a9207972374f5b07490fdec7473525dd7e465b98.jpg">

2

I am having trouble attaching file. Is there something I am doing wrong?

3

try again

<img src=/uploads/db1846/original/1X/a9207972374f5b07490fdec7473525dd7e465b98.jpg">

<img src=/uploads/db1846/original/1X/a9207972374f5b07490fdec7473525dd7e465b98.jpg">

<img src=/uploads/db1846/original/1X/77ef60be640d089bf3cc99e9d5b54ab998d8afca.jpg">

4

I see it, doing some research on it.