Vintage Turquoise Cuff NHMSS - Any Info?

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I have a Turquoise cuff that my mother has had since the late 60’s early 70’s. It has two identifying marks NHMSS (Navajo Handmade Sterling Silver) and etched very faintly what appears to be “Navajo Jose Tolldo”.

Curious if anyone has any information in regards to this piece, orgins, age, type of turquoise?

thank you