HKMAL collection
Mother coin of Northern Song, Emperor Hui Zong (徽宗), 政和通寶/Zheng He Tong Bao (1111 - 1117 AD), denomination: 1 cash; Deep characters (深字) variety. Reverse with the 'trimmed mark ' (circle) left by mint staff. 23.97mm, 3g.	Asia China 1111