Height 8.2 cm, mouth diameter 10.8-12.9 cm, base diameter 4.8 cm
The back of the lid of the inner box is inscribed with the calligraphy of Jyoshinsai. The circular base is similar to that of “Shichiri” and “Fujisan,” and this style is unique to Koetsu and cannot be found in Koetsu’s later works.
It is a shoestring-shaped tea bowl with the lower part held inward, and the mouth has an irregular bulge, and the roundness from the waist to the edge of the base is also taut, and the base is somewhat small. The tatami mats are flat, and although it is not clear, there are five marks on the tatami mats. The mouth rim is flattened as usual, but there are two points on the mouth where it is wedged, which may be the reason for this inscription. The bowl is wide and spacious, with no tea tamenuri, and its workmanship is very similar to that of the NONKOU type. It is likely that NONKOU was influenced by KOETSU. The yuzu on the body melts to a jet black color, and the glaze is fired like a yuzu skin. It was formerly in the collection of Mashida Nunoh.
