Lot 539. A large Jun bowl, Northern Song-Jin dynasty (960-1234); 8 ½ in. (21.6 cm.) diam. Estimate USD 12,000 - USD 18,000. Price realised USD 30,000. © Christie's Images Ltd 2018

The bowl is well potted with deep, rounded sides rising from a low, spreading foot to a slightly inverted rim, and is covered overall with an even glaze of pale, milky blue color thinning to a mushroom tone at the rim and stopping above the unglazed brownish-grey foot, Japanese wood box. 

Christie's. The Classic Age of Chinese Ceramics - The Linyushanren Collection, Part III, 22 March 2018, New York