Watch List notes:

China, The Tartar Dynasties, Xi Xia The Western Xia, Emperor Shen Zong, round cash with square hole, (A.D. 1211-1223), "Guang Ding Yuan bao", four characters around in Seal Script, diameter 25mm, rev. plain, (Hartill 18.110, Sch. -, cf.TFP 1694). Very fine and very rare.

Ex Noble Numismatics Sale 94, lot 3578. With amusing research.