15th century
Height 10.0 cm, mouth diameter 29.8 cm, bottom diameter 13.2 cm
The broad rim band with a brim is characteristic of Bizen mortar bowls. The rim band, which began to widen around the end of the Kamakura period, eventually exceeded the thickness of the vessel wall and began to rise vertically, with the overflowing portion hanging down or projecting outward like a tsubaki. The clay was iron-rich with many pebbles, and the clay was well tempered, giving it a blackish-brown color. The blackish-brown color of the clay became more common around this time, probably due to the fact that they began mixing it with rice field soil as well as mountain soil. The lime deposits on the exterior surface indicate that the site had been in the sea for a long time, and may have been removed during the removal process. This is one of the items commonly referred to as “sea-arrests”.
