The drum-shape jar has thick-walls and is very heavy. A band of 13 conical protrusions decorates the shoulder and near the foot rim. The outer base is concave upward, with surface polished naturally by 400 years of aging. It is covered in large areas by Òkiln-redÓ formed by migration of trace iron from clay interior to the surface during drying and firing, resulting in oxidized iron on the surface with pale orange-red color. The pale sky blue glaze had lost most of the shine of newly fired porcelain due to about 400 year aging, This type cobalt-blue glaze was started in late Ming and became popular during Kangxi period of Qing. The interior surface has many horizontal ring of finger-width, leftover from potterÕs handwork, this type of interior features is common among Song/Yuan/Ming jars. More interestingly, the blue glaze has numerous dark colored crackle lines that form a fine network. These features distinguish this jar from most of blue glazed porcelain, and make it highly valuable. An animal head holding a ring in its mouth decorates the left and right sides. From Dr. Robert I-San Lin (#1582), 86-year old senior Chinese artwork appraiser appointed by China Commission on Artwork Authentication, whose grandfather was a major Chinese antique collector/dealer in early 1900s. (His bio, published in Journal of Authentication of Artworks, 2015, is available on request). Brought to California in 1960s. H. 20.6, dia. 23.0 cm; 2726 g.

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