This is a wall-mounted decorative plate. Diameter: 20cm This item was displayed at my parents' house for a long time. I believe it is likely made of copper. There are traces of double-sided tape on the back. Please refrain from purchasing if you are at all concerned. Please note that recycled materials may be used for packaging. Also, the shipping method may be changed from "Yu-Yu Mercari Bin" to "Raku-Raku Mercari Bin." Please understand. Please consider purchasing this used item, understanding that it has been stored at home.