Ming Dynasty. Hong Wu Tong Bao, 1368-1398, AE 3 Cash (12.3 g, 28.2 mm). Issued by Zhu Yuanzhang, the first emperor of Ming Dynasty. The reverse die was mis-placed, possibly with a mintmark but unverifiable. Nice green patina on both sides. Good Very Fine. Estimate Value $200 - 250 Ex Dr. Patrick Tan