Made in TONO CHINA. I believe it's from the 1960s-70s. I bought it at a select shop a few years ago and used it a few times, but it's been stored in the back of the cupboard. The base is white with a textured finish. There is no stamp, but I think it's stoneware. Please check the third image. It has a unique design with slightly wavy edges. Size: 18cm in diameter. The rim is low and thin, making it light, durable, and easy to use. It's old, so there are some minor scratches. Thank you.