A rare and fine Ding/Dangyangyu persimmon-glazed conical tea bowl, Northern Song Dynasty (960-1127) the bowl is finely potted and covered in an even purple glaze on the interior, exterior and inside the unglazed foot-rim, 4.7 cm high, 18.2 cm diameter. Provenance: Sotheby's London, 13/07/2005, lot 138. Ky fine Art, Hong Kong Mossgreen, Melbourne, 16/06/2015, lot 50.