This is a JIS standard, made-in-Japan Isuzu Mishima nabe (earthenware pot). It's a high-quality donabe, with a track record of being selected five times for the National Ceramic Art Exhibition. Used 2-3 times. Inner diameter: Approximately 22cm The box has deteriorated as it has been stored a few times. [Brand] Isuzu Mishima Nabe [Category] Donabe (Earthenware Pot) Thank you.