Palace Museum, Beijing.
Celadon vase with dish shaped mouth, Longquan Ware, Zhejiang Province.
Southern Song Dynasty 1127-1279 A.D.
The Palace Museum holds 340,000 pieces of ceramics and porcelain, including the imperial collections from the Tang Dynasty and the Song Dynasty, as well as pieces commissioned by the Palace, and, sometimes by the Emperor personally, thus represents the best of porcelain production in China.
The ceramic collection of the Palace Museum represents a comprehensive record of Chinese ceramic production over the past 8,000 years, as well as one of the largest such collections in the world. For more, see wikipedia.