Bronze cufflinks. There appears to be a line-like marking on the surface, but I'm unsure if it's part of the design or a scratch, so I've listed them as "no noticeable scratches." On the back, there's a logo that looks like a three-leaf clover with "NUE" visible, but I don't know the brand name. I'm also unsure if the material is copper. For those who don't mind these details ☆