Rwanda. National Bank of Rwanda (Banki Nasiyonali y'u Rwanda). 1964-1976 Issues. 20 francs Type 1964. Date: Varieties. Dimensions: 125 x 70 mm. Watermark: None. Material: Paper. Security thread varieties. Printer: Thomas De la Rue (TDLR), London, England. Front and back: Polychrome printing predominantly brown, red, orange and green. Description of the front: Background made up of repeating patterns and rosettes with the value in the corners. Prefix and numbering in black. On the left, the flag of Rwanda. Texts in French. Several combinations of signatures with Vice-Governor & Governor, Vice-Governor & Administrator, Administrator & Governor and Administrator & Administrator. Description of the back: Background made up of patterns and rosettes with the value in the corners. Group of children seated on the left. Pumping station on the right. Texts in French. Large rosette containing the value on the right. Replacement note: Prefix ZZ.