Vintage Japanese porcelain sake cup (Guinomi) of Kutani ware (Kutani yaki).

Decorated with Japanese erotic art (Shunga) on the outer, egret and grass design on the inner.

The Fuku mark on the bottom.

Kutani ware (Kutani yaki) is a style of Japanese porcelain traditionally supposed to be from Kutani, now a part of Kaga, Ishikawa, in the former Kaga Province, Japan.

*This is a vintage item.