Vintage Modernist Cuff Bracelet

Half Silver, half Gold small wrist cuff Vintage bracelet Suspect it is plated over a metal such as copper. When cleaning, there were small spots of verdigris, which happens over time as it is exposed to air or mineralized water. Another clue is slight scent of a metal alloy Obvious Age wear, but still lovely on Diameter about 2" Inside end to end about 5" Gap 1.25" Some flex Unknown age or composition of metal, purchased labeled vintage, plz zoom in on pics I just think it's different so it's here!