Vintage 1970s but could be much older. Not sterling but silver. Antique silver finish. Asian or Thai origin. Cuff is scalloped with floral engraved circles and asian style cameo at centre. Closure a pin and chain that is attached on other side so it can't fall off. In very very good condition. See pictures. Looks handmade.
Fits a size Small/medium, medium, medium/large wrist. See measurements and compare to one at home:
Bangle circumference across inside cuff: 2 3/8"
Width of band: 1 1/4"