Exhibitions: Hans Coper, Hetjens Museum, Düsseldorf, Germany, 1980 

Hans Coper Retrospective - Innovation in 20th Century Ceramics, The Museum of Ceramic Art, Hyogo, Japan 2009; touring to The Shigaraki Ceramic Cultural Park, Museum of Contemporary Ceramic Art, Shiga, Japan (2010), Panasonic Shiodome Museum of Art, Tokyo, Japan (2010), Museum of Modern Ceramic Art, Gifu, Japan (2010), Iwate Museum of Art, Iwate, Japan (2011)

 Literature: The catalogue of the exhibition, Hans Coper, Hetjens Museum, Düsseldorf, Germany, 1980, cat.5, where (b) is illustrated. 

The catalogue of the exhibition, Hans Coper Retrospective - Innovation in 20th Century Ceramics, The Museum of Ceramic Art, Hyogo, Japan, 2009, P117/cat.76-77 

Lucie Rie & Hans Coper: 20 Seiki Tōgei no Shizukanaru Kakushin (Silent Innovation of the 20th Century Ceramics), written and edited by Yoshiaki Inui (1927-2017), published by Rokuyōsha, Tokyo, 2013, p220/cat.158-159 

Provenance: Dr Rainer and Sybile Klinge collection