There is no original box, and the kiln is unknown. There is a potter's mark. I couldn't determine whose work it is. It's a glossy, sturdy yunomi (teacup). It has been stored in the cupboard for a long time. I'm not sure if it's unused, but even if it has been used, it's probably only a few times. I am also listing Bizen-yaki and Tamba-Tachikui-yaki, so please take a look. I welcome combined shipping.