One from a Pair of Solid Open Bangles with Two Rows of Concentric Circles

The image shows a solid open bangle with two rows of concentric circles. The bangle is made of a greenish metal, likely bronze or copper, and has a rough texture. It is circular in shape, with a gap at one end. The bangle is lying flat on a plain surface, with the gap facing the bottom center of the image. The surface of the bangle features two rows of concentric circles. The bangle has a light green patina and appears to be old. The background is a plain gray surface.