It does appear to be Northern Song - Huizong, Zheng He Tong Bao, possibly Li script, 1111-1118.
I thought the style was too crude, but I couldn't find any imitations of this particular type, and this example seems to be a fairly good match. Maybe it's just so corroded that it looks crude?
I thought the style was too crude, but I couldn't find any imitations of this particular type, and this example seems to be a fairly good match. Maybe it's just so corroded that it looks crude?





















