Sueki or Sue ware 400-700 CE High-fired blue-gray stoneware. This state-of-the stoneware type was developed in Japan and Korea simultaneously and together for centuries. Specifically, in Korea at the time was the Silla Kingdom (57 BCE – 935 CE) that controlled the side of Korea adjacent to Japan. You can see a contemporaneous Silla piece here.

Price	$800
Dimensions	Width 5.1in : Length 5.1in : Height 3.2in : Weight 13.05oz, 370g