A dish of this type was excavated in 1986 from the kiln site of the Tongchuan kiln at Huangbaozhen, Yaozhou. This excavated dish, which is now in the Archaeological Research Institute of Shaanxi province, is illustrated in Gifts of the Tang Emperors - Hidden Treasures from the Famen Temple, Tokyo, 1999, p. 110, no. 69, where it is dated to the 9th century. Several dishes of the same form, decorated using the same technique as the current dish, also excavated from the Tongchuan, Yaozhou kiln, are illustrated in Yaozhou Kiln, Xian, 1992, where they are attributed to the Tang dynasty. Two more such dishes are illustrated in Masterpieces of Yaozhou Ware, Museum of Oriental Ceramics, Osaka, 1997. One was excavated at Huangbaozhen in 1990 and the other is in the collection of the Tokyo National Museum. They are both dated to the 9th century and are illustrated as nos. 122 and 12 respectively.