I found this while cleaning out my husband's family home. It seems to be old. I'm not sure if the interior's uneven texture is due to a specific technique or just happened that way. The exterior has a glossy, lustrous feel. The indoor scenery from when the photo was taken is reflected in it. I don't know what era it's from or which kiln it was made in. The bottom is a bit more gray. Is it a rice bowl? It weighs 203.4g. Diameter: 12.3 cm, Height: 5.5 cm If you're interested, please consider it. I will ship it anonymously. I will protect it with cushioning material.