China Northern Sung Dynasty "Yuan Feng Tung Pao" (元豐通寶) copper coin (cash), AD1078-1085. Diameter is around 25mm.
This cash was produced during the period of the emperor of Northern Sung Dynasty, Shen Tsung (神宗) on his Reign "Yuan Feng" (元豐）AD1078-1085.
The four characters are the seal script and clockwise around central square.
Shen Tsung has two reigns which named "Hsi Ning" (熙寧) AD1068-1077 and "Yuan Feng" (元豐) AD1078-1085 respectively.
The coin is good for hobby collection. The coin conditions are shown as photos.