Vintage Siam sterling hinged bangle bracelet. It is embossed all the way around on both edges and at the hinge and clasp.  It has colorful enamel guilloche enamel deign all the way around. It has a slide in locking clasp that locks in well…a little too well. I have a hard time getting it to open, but iit does. It has original safety chain. Interior measures 6 1/2” in circumference and 2 1/8” interior diameter. For a smaller wrist. It is 3/8” wide. Weight: 21.8 grams. Silver is tarnished-original patina.  Enamel in excellent condition.