Four Chinese characters (regular script) Xi Ning Zhong Bao / Heng above the hole (for Hengzhou in Hunan). 25mm, 4.18 grams. Issued in 1071-1077 AD. Schjoth #-; Hartill 16.192. SKU T783-41413

Rare with the name of the mint. The reverse character was very weakly imprinted and can usually not be read.