This is a vintage sterling and inlaid stone and abalone cuff bracelet. It is marked 925 Hecho en Mexico on the back. The cuff is 1 1/8" high, 2 1/8" across the widest point inside, and the opening is 1 1/8" across. It needs to be polished, but is otherwise in excellent condition.
Sterling Abalone Inlay Cuff Bracelet Mexico