China, 732-907 AD., Tang Dynasty, late Kai Yuan type, 1 Cash, Hartill 14.8h.

China, Tang Dynasty (618-907), late Kai Yuan type, issued ca. 732-907 AD.,
Æ 1 Cash (24 mm / 3,71 g), cast, square center hole,
Obv.: 開 元 通 寶 , Kai Yuan Tong Bao ("The Currency of the K'ai-yuan Period" or "The Inaugural Currency") , top-beneath-right-left of central hole. The "jing" component of "Kai" touches the hole, the top stroke of "Yuan" is longer, left shoulder on "Yuan", the two stokes in the middle of "bao" touch the verticals.
Rev.: vertical line left of square center hole.
Hartill 14.8h ; cf. Schjöth 312ff .