Located in Sammu-shi, Chiba
This is Seto ware.
Seto is a kiln with a long history located in Aichi Prefecture, Japan (Seto kilns are marked with red circles on the map). It is said to have originated around the 13th century.
In Japan, items from this period of Seto ware are referred to as "Ko-Seto." "Ko" means "old."
This particular item is Ko-Seto, which was fired around the 13th century.
One of the distinguishing features of Ko-Seto, as compared to other kilns, is the presence of glaze. While other kilns produced mostly unglazed pottery, Ko-Seto was covered with ash glaze, giving it a yellowish-green or pale emerald-green color.
In the early Kamakura period (13th century), when Ko-Seto production began, there was increased demand from temples in Kamakura (the capital city of the time, in present-day Kanagawa Prefecture) and the Tokai region for roof tiles, Buddhist ritual objects, and burial urns...
Category
Antique 15th Century and Earlier Japanese Other Antiquities