China, 1158-1161 AD., Jin dynasty, king Kai Ling, also called emperor Wan Jan Liang, 1 Cash, Hartill 18.40.

China, Jin dynasty (1115-1234 AD.), king Kai Ling, also called emperor Wan Jan Liang (Wan Yen Liang) (reign 1149-61 AD.), reign title: Zheng Long (Cheng Lung) (1158-1161 AD.), issued 1158-1161 AD.,
1 Cash (25-25,5 mm / 4,23 g), cast, square center hole,
Obv.: 正 隆 元 寳 , Zheng Long Yuan Bao, clockwise around center hole; regular 4 stroke Zheng.
Rev.: plain (square center hole).
Hartill 18.40 (rarity 14, very common) ; Schjöth 1083 ; FD 1637 .
The coins of the Jin tend to be very well made.