National Bank of Viet Nam, 1964-66 ND Issue. 20 Dong, P-16s. Stylized fist at center back. Red overprint: GIAY MAU on both sides, and red GIAY MAU KHONG GIA TRI in small letters at top left. Handstamp 0091 in watermark area on back. Formerly mounted at right end on back. Otherwise Choice Uncirculated.
Estimate: 200-400