Wine Bottle, Northern Song Dynasty (960-1127). Porcelain with russet glaze (Ding ware), 37.5 x 22.9 cm. Gift of Charles H. Ludington from the George Crofts Collection, 1923. Philadelphia Museum of Art, 1923-21-272.

Ding wares were so popular that kilns around the country copied them. The thinly potted body and lightness of this ovoid bottle distinguish it as an original Ding ware, as opposed to a Cizhou copy, which would be noticeably heavier. According to a Ming dynasty (1368–1644) record, russet-colored Ding wares were rarer than white and so valued more.