One of only four extant Jian ware yohen tenmoku tea bowls, made in China during the Southern Song dynasty (12–13th century CE). Now on display at the Seikadō Bunko Art Museum in
Yohen Tenmoku – World's Most Precious Tea Bowls | OrientalSouls.com
Stuffed replica of national treasure tea bowl a huge hit at museum | The Asahi Shimbun: Breaking News, Japan News and Analysis