Date : The book of Liang says this type was first cast in AD 523.
Denomination : Iron Wu Shu (5 shu).
Reference : Schjoth-232.
Size : 20.7 mm. Weight : 1.99 grams.
Grade : gF (nice for an iron coins). The character WU is clearer on the coin than the image suggests.
Obverse : "Wu Shu".
Reverse : no inscription but with 4 rays diagonally from the four corners of the inner square.
PLEASE NOTE THAT THESE EARLY IRON COINS ARE SLIGHTLY FRAGILE AND MUST BE HANDLED CAREFULLY.