NORTHERN SONG: Xuan He, 1119-1125, AE cash (2.23g), H-16.468, clerical script, regular style, rare in this script, several natural flan cracks, Fine, R, ex Adam Yeung Collection. Calligraphy attributed to the Huizong emperor. He invented the Slender Gold style of calligraphy and was known as a great painter, poet, and calligrapher.