This is an aluminum stockpot from Aritsugu in Kyoto (they call it a "sundon nabe"). The size is small, with a diameter of 21cm, and it's the smallest type in the series of aluminum stockpots that Aritsugu used to carry. The second image shows a 500ml plastic bottle for size comparison. It's a size that's easy to handle in a home kitchen, but it still has a larger capacity than a typical pot, making it suitable for cooking curries and stews, as well as boiling pasta, somen noodles, edamame, and other items in plenty of water. There isn't much sign of use. While there are maintenance marks such as fine polishing scratches, there is no significant damage, and it is generally in a clean condition. There is also no stubborn black grime that often occurs at the joints between the handles and the pot. I think you will be able to use it for a long time to come. Size: Diameter 212mm, Height (to the rim) 178mm Aluminum stockpots were listed in old catalogs up to two generations ago, but they are not listed in the current catalog (only copper stockpots are currently available).