Sierra Leone
Now showing: Sierra Leone - Postage stamps (1859 - 2018) - 1 stamps.
1990
Exploration of Mars
15. January WM: None Perforation: 14
![[Exploration of Mars, type ]](https://www.stampworld.com/media/catalogue/Sierra-Leone/Postage-stamps/1403-b.jpg)
| No. | Type | D | Color | Description |
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| 1403 | AGL | 175Le | multicoloured | 3.48 | - | 3.48 | - | USD |
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| 1404 | AGM | 175Le | multicoloured | 3.48 | - | 3.48 | - | USD |
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| 1405 | AGN | 175Le | multicoloured | 3.48 | - | 3.48 | - | USD |
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| 1406 | AGO | 175Le | multicoloured | 3.48 | - | 3.48 | - | USD |
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| 1407 | AGP | 175Le | multicoloured | 3.48 | - | 3.48 | - | USD |
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| 1408 | AGQ | 175Le | multicoloured | 3.48 | - | 3.48 | - | USD |
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| 1409 | AGR | 175Le | multicoloured | 3.48 | - | 3.48 | - | USD |
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| 1410 | AGS | 175Le | multicoloured | 3.48 | - | 3.48 | - | USD |
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| 1411 | AGT | 175Le | multicoloured | 3.48 | - | 3.48 | - | USD |
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