A Chinese Yaozhou ribbed conical bowl Northern Song Dynasty (960-1127) with six vertical piped slip ribs to the interior, covered in an even olive hued glaze. R & V Tregaskis label to underside. 7.5 cm high, 20 cm diameter. Provenance: Mossgreen Auctions, Melbourne, 16 June 2014, lot 108 Mossgreen auction 108 16/6/2014