YUAN: Mongol Khans, ca. 1230-1280, AE 2 cash (4.1g), H-19.7, curved top stroke in da, graded 72 by GBCA Grading Company, VG-F, ex Dr. Dirk Löer Collection. This interesting type is derived from the Northern Song da guan tong bao type, but the style of the calligraphy is more correct for the early Yuan period, as is the casting style and weight.
