Found this at a new permission. Most items I'm finding so far are dating from mid to late 60's. I'm not sure what the material is, as it has a greenish patina in spots, but underneath it looks silverish. Anyway, it's slightly bigger than a nickel, has a rectangular hole on one end and a longish section that got folded over. It's a fairly thin metal, the outer edges seem to be shaped like a flower and the silvery marks on the surface look like a flower petal design. Anyone have any ideas what this is?