This is a Navajo photo. Look at the right of his middle arm and you will see a design pattern that looks like a s-shaped snail design.
Navajo silversmith - circa 1950:
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Do you see it? Now this is a Hmong photo. Look at the picture and you will see a design pattern that looks like a s-shaped snail design.
Hmong embroidery with s-shaped snail design:
Do you see it?
The Hmong (Miao) called that motif the Ram/Goat’s horn motif.