Stamps of South West Africa, 4 base month
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postage
1923, Apr setting2 issue ovpted on stamps of South Africa wmk. springboks head p. 14
| - | 5sh | bl & cl | ovpt, King George V | — | — | |
| - | 10sh | olgrn & bl | ovpt, King George V | — | — | |
| - | 1lb | red & grn | ovpt, King George V | — | — |
1948, Apr 26 Silver Wedding issue ovpted on stamp of South Africa photo print wmk. mult springboks head (no perf info)
| - | 3p | bl & sil | ovpt, Queen Elizabeth & King George VI | — | — |
1973, Apr 28 landscapes (1973) wmk. RSA in triangle (5 stamps)
| - | 2c | — | — | |||
| - | 4c | — | — | |||
| - | 5c | — | — | |||
| - | 10c | — | — | |||
| - | 15c | — | — |
1974, Apr 10 Twyfelfontein Rock-engravings
| - | 4c | multi | — | — | ||
| - | 5c | multi | — | — | ||
| - | 15c | multi | — | — |
1978, Apr 14 Life of Bushmen
| - | 4c | multi | .20 | .20 | ||
| - | 10c | multi | — | — | ||
| - | 15c | multi | — | — | ||
| - | 20c | multi | — | — |
1979, Apr 5 Water Birds (1979)
| - | 15c | multi | Phalacrocorax carbo | — | — | |
| - | 20c | multi | Charadrius pallidus | — | — | |
| - | 25c | multi | Pelecanus onocrotalus | — | — |
1984, Apr 2
| - | 11c | multi | Cannachaetus taurinus | — | — |
1985, Apr 1
| - | 12c | multi | .20 |
1986, Apr 1
| - | 14c | multi | Felis caracal | — | — |
1986, Apr 24 rock formations (1986 South West Africa)
| - | 14c | multi | — | — | ||
| - | 20c | multi | — | — | ||
| - | 25c | multi | — | — | ||
| - | 30c | multi | — | — |
1987, Apr 1
| - | 16c | multi | Phacochoerus aethiopicus | — | — |
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