- | 16c | multi | West Indian Ocean coelacanth Latimeria chalumnae | .20 | ||
- | 30c | Professors Smith Courtenay | ||||
- | 40c | multi | Grahamstowns Institut | |||
X | 50c | coelacanth & submarine |
- | 18c | desertification | .20 | |||
- | 30c | eroded gullies | ||||
- | 40c | barrage | ||||
- | 50c | verdant plain |
- | 18c | .20 | ||||
- | 30c | |||||
- | 40c | |||||
- | 50c |
- | 18c | .20 | ||||
- | 30c | |||||
- | 40c | |||||
- | 50c |
- | 18c | FW de Klerk | .20 | |||
- | 45c | FW de Klerk |
- | 18c | .20 | ||||
- | 30c | |||||
- | 40c | |||||
- | 50c |