This is a plate made in Hita City, Oita Prefecture, known as Onta-yaki pottery. The unique geometric pattern is created using the traditional Onta-yaki technique called "Uchihakeme" (brush-stroke pattern). While turning the kick wheel, the potter rhythmically strikes a brush against the surface coated with white slip, creating these radial streaks. The techniques, which have been passed down "from parent to child" since the mid-Edo period, are still preserved today. It is said that the pottery is made by traditional handcraftsmanship, without using any machines, and utilizing the power of river water in a "karausu" (a type of water-powered mill) to crush the clay. It was highly praised by Soetsu Yanagi and others during the Mingei (folk art) movement in the early Showa era, and is said to have been called "the world's best folk pottery." Approximate dimensions are as follows: Diameter: Approximately 30cm, Height: Approximately 6cm I believe it is in good condition, but it is a used item, so please refrain from purchasing if you are concerned.