Stamps of Sierra Leone, Mars c issue
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postage
1990, Jan 15 Mars c issue unwmk p. 14 (9 stamps)
| - | 175le | multi | Olympus Mons | — | — | |
| - | 175le | multi | Viking 1 | — | — | |
| - | 175le | multi | Viking 2 releases Lander | — | — | |
| - | 175le | multi | Lander entering Mars’s atmosphere | — | — | |
| - | 175le | multi | Parachute deployed | — | — | |
| - | 175le | multi | Terminal descent | — | — | |
| - | 175le | multi | Viking lander on Mars | — | — | |
| - | 175le | multi | Soil sampler robotic arm | — | — | |
| - | 175le | multi | Soil Sampler US flag machine | — | — |
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