Northern Song Dynasty. Xuan He Tong Bao, 1119-1125, AE Cash (3.4 g, 24.2 mm). Mintmark \Shan\ on the back. Slander golden script variety. The characters were believed to be written by Emperor Hui Zong. Nice green and cinnabar patina. Good Very Fine. Estimate Value $150 - 200 Ex Dr. Patrick Tan Colle