Signature: Signed: Kōji zō. Sealed: Kōji no in; Potter's mark: Kōji saku (incised by foot); Made by Kōji. Potter's mark: Unread incised on the bottom
Marking: Box title: Yōhen yuteki temmoku chawan; Oil-spot glazed temmoku tea bowl
[ Joan B. Mirviss Ltd. , New York, until 2006; sold to MMA]
New York. The Metropolitan Museum of Art. "A Sensitivity to the Seasons: Autumn and Winter," June 22, 2006–September 10, 2006.
New York. The Metropolitan Museum of Art. "A Sensitivity to the Seasons: Summer and Autumn in Japanese Art," June 24, 2011–October 23, 2011.