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Xuan He Tong Bao 1-cash in seal script

The thin characters with fine cursive strokes. Also called "Mei Zhi" in Chinese. Cast under rule of emperor Hui Zong of Northern Song dynasty. 24mm - 15 USD @ dong_hua_zhai 

Ref. Fugo Senshi 1059

If you collect Xuan He coins, you will be amazed by the number of variants exist!