Vintage Navajo Tufa Stone Cast Sterling Silver Bracelet with Crow Springs Turquoise

From the private estate of Frank Gingerich, who was a Hell's Angel motorcycle gang member, is this amazing Vintage Navajo bracelet. It comes with original receipt from 1973. (NOT the price that I paid) The bracelet was old pawn back then. I suspect this was Frank's wife's bracelet. C. 1940s. 

This cuff is tufa stone cast in solid sterling silver. The large natural turquoise stone is from the Crow Springs mine. It is a deep blue color and peppered with black chert. Stone measures 22mm by 15mm. 

The interior measurement is 5 1/8" plus the opening of 1 1/4". Fits a wrist the measures 6 1/2" around. Tufe stone cast pieces are not adjustable. It is 2 1/2" wide. Weight: 72.9 grams.