This is a vintage mixed metal cuff bracelet, typically featuring a combination of copper, brass, and silver-toned metals. 
These pieces are often handcrafted and known for their artistic, sometimes modernist, or tribal designs. 
Product Information
Feature Detail
Type Cuff Bangle/Bracelet
Material Mixed metals, commonly copper, brass, and silver (or silver-toned)
Style Often vintage, mid-century modernist, artisan, or tribal in style, frequently featuring a twisted or woven design