The origin is unknown. There is almost no sign of use. The accompanying box is a heavy and sturdy wooden construction shaped like a suzuri (inkstone). - Material: Wood (box) - Shape: Irregular - Use: Suzuri (inkstone) Suzuri (Inkstone) 18 x 12 x 2.1 cm, 753g Box 20.7 x 14.5 x 4.7 cm