A large Junyao deep bowl, late Jin Dynasty, 12-13th century, covered in a 'peacock feather' glaze darkening at the rim, 11 cm x 22.3 cm. See 'The Multiplicity of Simplicity, Monochrome Wares from the Song to the Yuan Dynasties', HK University, 2012, cat no's 86 & 87; for very similar examples; also Roger Kevern, 'Summer Exhibition', 2007, cat no 30