The Greatest Inventors 2017
Now showing: Sierra Leone - Postage stamps - 2017 - The Greatest Inventors - 4 stamps.
2017
The Greatest Inventors
30. November WM: None Perforation: 13¼
![[The Greatest Inventors, type ]](https://www.stampworld.com/media/catalogue/Sierra-Leone/Postage-stamps/9108-b.jpg)
| No. | Type | D | Color | Description |
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| 9108 | LMM | 9800Le | multicoloured | Alexander Graham Bell, 1847-1922 | 2.33 | - | 2.33 | - | USD |
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| 9109 | LMN | 9800Le | multicoloured | Thomas Edison, 1847-1931 | 2.33 | - | 2.33 | - | USD |
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| 9110 | LMO | 9800Le | multicoloured | Alexander Fleming, 1881-1955 | 2.33 | - | 2.33 | - | USD |
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| 9111 | LMP | 9800Le | multicoloured | Nikola Tesla, 1856-1943 | 2.33 | - | 2.33 | - | USD |
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| 9108‑9111 | Minisheet | 9.31 | - | 9.31 | - | USD | |||||||||||
| 9108‑9111 | 9.32 | - | 9.32 | - | USD |
