This is a Showa-era "Mizu-nabe" (waterless pot). The lid, which also functions as a frying pan, has a diameter of approximately 30cm. It has been stored in a cupboard for a long time, but I rarely used it, and I won't be using it in the future, so I'm putting it up for sale. There are stains and scorch marks. Please purchase if you understand that this is a home-stored, used item. Thank you for looking.