The bronze coin of Chu State imitated the sea shell had many names. "Yi Bi" coin, thepopular namel should be the best one which means smaller. "San Zi Bet" (Shell money withcharacter "three" ) is an independent type. ...
Author had seen three "Ou Xin "coins and two copper boxes used by installign coins inXi’An city. and found two of them could be put into one of the boxes, some history bookshad recorded this kind of boxes and coins, ...