Note Description | PrAg | G | VG | F | VF | VF EPQ | 40 | 40 EPQ | 45 | 45 EPQ | 50 | 50 EPQ | 53 | 53 EPQ | 55 | 55 EPQ | 58 | 58 EPQ | 60 | 60 EPQ | 61 | 61 EPQ | 62 | 62 EPQ | 63 | 63_EPQ | 64 EPQ | 65 EPQ | 66 EPQ | 67 EPQ | 68 EPQ | 69 EPQ | 70 EPQ |
ND (1977-84) - Wmk: Heraldic Eagle
| 39802 | 20 Naira 1973; 1977 ND Issue NIG18a | | | 20 | 37 | 63 | 111 | 186 | 221 | 292 | 325 | 392 | 429 | 505 | 544 | 622 | 657 | 729 | 750 | 794 | 817 | 865 | 865 | 910 | 925 | 972 | 1004 | 1020 | 1054 | 1071 | 1107 | 1134 |
ND (1977-84) - Wmk: Heraldic Eagle
| 39803 | 20 Naira 1973; 1977 ND Issue NIG18b | | | 12 | 20 | 37 | 67 | 115 | 140 | 190 | 214 | 262 | 289 | 345 | 374 | 434 | 461 | 515 | 531 | 565 | 583 | 620 | 620 | 655 | 666 | 703 | 729 | 742 | 768 | 781 | 809 | 831 |
ND (1977-84) - Wmk: Heraldic Eagle
| 39804 | 20 Naira 1973; 1977 ND Issue NIG18c | | | 3 | 6 | 9 | 16 | 32 | 41 | 59 | 69 | 89 | 100 | 123 | 136 | 163 | 175 | 201 | 209 | 227 | 236 | 255 | 255 | 272 | 278 | 298 | 311 | 317 | 330 | 338 | 354 | 363 |
ND (1977-84) - Wmk: Heraldic Eagle
| 39806 | 20 Naira 1973; 1977 ND Issue NIG18e | | | 3 | 3 | 6 | 9 | 16 | 20 | 28 | 33 | 45 | 51 | 63 | 71 | 89 | 96 | 111 | 116 | 127 | 132 | 143 | 143 | 155 | 159 | 171 | 179 | 184 | 194 | 199 | 209 | 216 |