Stamps of South West Africa, Water and Electricity Supply design type, missing design, not overprinted
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postage
1976, Nov 19 Water and Electricity Supply wmk. RSA in triangle (no perf info)
| - | 15c | multi | — | — | Owambo Canal System | |
| - | 20c | multi | — | — | Ruacana Dam & hydroelectric station |
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