I don't remember how many years ago I bought this, but I've only used it a few times and then just left it in the living room, box and all, so the box is dirty (see photo 6). The ear cuff itself is in beautiful condition. I thought I'd lost the warranty, but I found it! The retail price was 26,400 yen including tax. If anyone is interested, please ask any questions or negotiate the price in the comments. Yellow gold x diamond