23944 人間国宝 清水卯一 (Horai Hakuryu Cup) SHIMIZU Uichi
Height 5.2 cm
Diameter 6.7 cm
In 1940, he dropped out of Ritsumeikan Commercial School (later the new Ritsumeikan High School) and studied under Munemaro Ishiguro to study Chinese pottery.
On April 13, 1985, he was certified as a holder of the important intangible cultural property "Iron Glazed Pottery" (so-called Living National Treasure).
It is a work of the later years named "Horai".