Sierra Leone
Praegu kuvatakse: Sierra Leone - postmargid (1859 - 2018) - 1 margid.
2002
Technological Development from Steam to Electricity
24. jaanuar WM: mitte ükski perforatsioon: 13¼
![[Technological Development from Steam to Electricity, Tüüp ]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Sierra-Leone/Postage-stamps/4212-b.jpg)
| Nr | Tüüp | D | Värv | Kirjeldus |
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| 4212 | EHU | 1100Le | mitmevärviline | Robert Fulton | 1,09 | - | 1,09 | - | USD |
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| 4213 | EHV | 1100Le | mitmevärviline | Thomas Edison | 1,09 | - | 1,09 | - | USD |
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| 4214 | EHW | 1100Le | mitmevärviline | 1,09 | - | 1,09 | - | USD |
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| 4215 | EHX | 1100Le | mitmevärviline | 1,09 | - | 1,09 | - | USD |
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| 4216 | EHY | 1100Le | mitmevärviline | James Watt | 1,09 | - | 1,09 | - | USD |
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| 4217 | EHZ | 1100Le | mitmevärviline | Alexander Graham Bell | 1,09 | - | 1,09 | - | USD |
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