Brush Washer, Northern Song Dynasty (960-1127). Glazed stoneware (Ru ware), 3.4 × 13 cm. Gift of Major General and Mrs. William Crozier, 1944. Philadelphia Museum of Art, 1944-20-95a,b.

Inscribed on the base (translated):

The rarity and quiet elegance of Ru ware makes it one of the most sought after of all Song dynasty (960–1279) ceramics. So revered were Ru pieces that they were collected and appreciated by later emperors. On the base of this piece is a poetic inscription by the Qianlong emperor who ruled from 1736 to 1795.