Does anyone know "NAKAI" - stamped in capitals?

I know there are many Navajo jewelers with the name “Nakai.” Is this hallmark identifiable?

<img src=/uploads/db1846/original/1X/d54f3030f150aaa3b2c4fbb392a2ffc83b1d1ab3.jpg">

<img src=/uploads/db1846/original/1X/a787eeb2d9f7580e471df89c6e30390ca5a9b529.jpg">

I forgot to add that it is also signed “NAKAI” in capital letters.

I was familiar with it, but seems to belong to a George Nakai or a manufacturer using that hallmark. Nakai means Mexican in Navajo, thanks for sharing.