One of the two pottery tea bowls designated as national treasures that has been baked in Japan. It has been fired in a kiln called Mutabora kama in Mino ( an old province of the southern part of Gifu Prefecture) in Momoyama period, which is characterized by its warped shape, unconventional spatula work, and under-glaze iron decoration (a technique using pigment containing iron). It is currently stored at the Mitsui Memorial Museum. 

across: 11.8 cm
tall: 9.5 cm
origin: Japan
age: 16 - 17 c
collection: Mitsui Memorial Museum