Excavated from Nagano, Shigaraki Town, Koka City, Shiga Prefecture
Attributed to the 2nd year of the Choroku era (1458)
Height 30.0cm (jar), 11.5cm (mortar)
Shigaraki Ceramic Research Institute
This jar was excavated as a bone ware, and the combination of a jar and a mortar can be found throughout Japan. The ground bowl has a flat bottom and flat rim, and the inner surface is sparsely grated with a comb. The jar is valuable as a chronological standard because it has a broad rim band with the mouth rim folded back.