This is a handmade item by the artist "Kichi" (Kichi-san). I previously purchased this from a handmade artist and used it as a music box. Currently, the music box doesn't play, but it seems it can still be used as a decoration. It's lighter than a 500ml plastic bottle. The material feels like clay or bisque. As shown in photos 5, 6, and 7, there is some discoloration and staining due to aging. I lightly wiped it, and it faded slightly. It's designed in an antique style, so I don't think it's very noticeable. If you're concerned, I can add more photos, so please feel free to ask. #handmade #musicbox #antique #bisquedoll