TT PK 6s 1960 RWANDA-BURUNDI 500 FRANCS SPECIMEN BLACK RHINO PMG 67 EPQ SUPERBTT PK 6s 1960 61 RWANDA BURUNDI 500 FRANCS SPECIMEN BLACK RHINO PMG 67 EPQ SUPERB GEM UNCIRCULATED! 1960 61 500 Francs from Rwanda Burundi. Pk 6s and serial number A00000 25. Specimen banknote graded 67 Exceptional Paper Quality Superb Gem Uncirculated by PMG. This near perfection example is tied with six more at this grade level of 67 and none graded finer by PMG according to PMG Population Report. An iconic banknote issued near the end of the