NGUYEN DYNASTY (DAI NAM QUOC): Tu Duc, 1847-1883, AR lang (39.64g), Sch-340, in Hán Nôm characters, tu duc nien tao (made in the Tu Duc Era) // tinh ngan nhat lang (pure silver one lang [liang]), trung binh hieu (made on the Trung Binh scale) on left edge and tri tien nhi quan bat mach (monetary value of 2 ligatures 8/1-) on right edge, VF. This type was restruck with many different dies until the early 20th century as a popular form of bullion for use in Indochina.
Estimate: 100-150 USD