Tribal Hallmark Identification Assistance

I need help identifying this hallmark for a friend of mine. They bought this turquoise bracelet back in the 70’s and would like to know what tribe this hallmark represents. Thanks!!

The style of bracelet is Navajo. Can you tell us where your friend purchased this bracelet? I have never seen a mark like this, but the bracelet looks right.

Thanks for taking time Jason… It was purchased at a native american swap meet at Union Square in San Francisco in the late 70’s. That’s all she knows.

I can’t make sense of it, so I am just ignoring the top and writing it off as something I don’t understand. Then I took the bottom mark and want to make a GL or CL out of it, come up with a name Charles Lewis that makes sense. What I am getting at is I have no idea and that is my best guess.