Vintage Native American Roy Buck? Navajo Sterling

Vintage Native American Navajo Sterling Silver Turquoise Ring Size 8. I wear a size 7 ring. So that will give you an idea in the pic that im wearing it. Condition is Pre-owned. Heavy womens ring. This is from my mothers personal collection. She only buys good quality jewelry here in Arizona Metal: Sterling Silver Stone: Turquoise Tribe: Navajo Signed: "R"  Possibly Roy Buck If you have any questions, please ask prior to purchase. Thanks.