Vietnam - Minh Mang (1820-1841) - 10 Lang nd. (1833), curved silver bar, stamped Minh Mang (KM206 ff, Schr.--) Genuine 'nén bac' ingot with somewhat crude and barbarized inscriptions. 'Minh Mang', 'qui-ti' (1833), 'noi thang', inner treasure (personal treasure of Emperor) / Rev: 'Thap lang', lang - Silver 355.0 g. - VF