A Northern black-glazed pear-shaped vase, Song Dynasty (960-1279). Estimate HK$400,000 – HK$500,000($51,817 - $64,772). Photo Christie's Image Ltd 2015

The pear-shaped body rises to a flaring rim and is covered overall with a lustrous black glaze ending at the slightly splayed foot to expose the granular buff ware. 11 3/4 in. (30 cm.) high 

Christie's. FINE CHINESE WORKS OF ART FROM THE YAOGUSHANFANG COLLECTION, 6 April 2015, 22nd Floor