Two 'Yaozhou' celadon bowls, Northern Song dynasty. Estimate 40,000 — 60,000 HKD (4,532 - 6,79 8EUR).  Photo Sotheby's

one potted with deep rounded sides and a thin everted rim, the rim and interior moulded with six raised ridges to imitate lobes and glazed with a lustrous sage-green thinning over the ridges; the plain bowl of conical form, well potted on a low foot and an everted rim, the olive-coloured glaze stopping just above the knife-pared foot. 11.9 and 14.8 cm., 4 5/8  and 5 3/4  in.

PROPERTY FROM A PRIVATE JAPANESE COLLECTION, TOKYO 

Sotheby's. Chinese Art, Hong Kong, 03 déc. 2015, 02:00 PM