Stamps of Nigeria, 30 Jul 1991
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postage
1991, Jul 30 Nigerian fish wmk. mult crown & script CA p. 14
| - | 10k | multi | Malapterurus electricus | — | — | |
| - | 20k | multi | Lates niloticus | — | — | |
| - | 30k | multi | Tilapia nilotica | — | — | |
| - | 50k | multi | Clarias gariepinus | — | — |
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