Fred Harvey 1940's Old Pawn Thunderbird Turquoise Adjustable Size (6-12) Ring

Fred Harvey Era 1940's Old Pawn Thunderbird Turquoise Adjustable Size Ring Can be worn by most any ring size as it has an adjustable back. Currently it's adjusted to fit a size 10. Doesn't have a stamp so I'm not sure if its .925, but its never turned my finger a color. Pretty sure the stone is turquoise but not sure of the origin of it. Priced accordingly since I don't know for sure. Very cool piece, I've only seen one other like it and it is being sold for $225. This is a steal!