Blue glazed square flowerpot of official kiln

[Blue glazed square flowerpot of the official kiln]

Blue glazed square flowerpot of the official kiln, Song Dynasty, 9.2 cm high, 15.3 cm long at the mouth and 13.0 cm long at the foot
The flowerpot is rectangular, open, copper inlaid at the mouth, straight wall, with a round hole in the center of the flat bottom. The bottom of the tool is supported by four short feet, and the exposed part of the bottom foot is dark brown, commonly known as “iron foot”. The whole body is painted with powder cyan glaze. The glaze is split in large pieces, with cracks all over the body
This basin has a regular shape and green glaze
The wares of the official kilns, Ge kilns and Longquan kilns in the Song Dynasty are often dark brown at the unglazed part of the feet, which is called “iron feet”. The reason is that the fetal bone of this kind of utensil has a very high iron content, which appears in the exposed part of the foot with strong reduction effect.

官窑青釉方花盆底部