Great Scientific Discoveries 1987
Visar nu: Grenada - Postfrimärken - 1987 - Great Scientific Discoveries - 4 frimärken.
1987
Great Scientific Discoveries
9. september WM: Inga Perforering: 14
![[Great Scientific Discoveries, Typ AYY]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Grenada/Postage-stamps/AYY-s.jpg)
![[Great Scientific Discoveries, Typ AYZ]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Grenada/Postage-stamps/AYZ-s.jpg)
![[Great Scientific Discoveries, Typ AZA]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Grenada/Postage-stamps/AZA-s.jpg)
![[Great Scientific Discoveries, Typ AZB]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Grenada/Postage-stamps/AZB-s.jpg)
| Nummer | Typ | D | Färg | Beskrivning |
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| 1713 | AYY | 50C | flerfärgad | Isaac Newton holding Apple (Law of Gravity) | 1,08 | - | 1,08 | - | USD |
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| 1714 | AYZ | 1.10$ | flerfärgad | John Jacob Berzelius and Symbols of Chemical Elements | 2,16 | - | 2,16 | - | USD |
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| 1715 | AZA | 2$ | flerfärgad | Robert Boyle (Law of Pressure and Volume) | 3,23 | - | 3,23 | - | USD |
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| 1716 | AZB | 3$ | flerfärgad | James Watt and Drawing of Steam Engine | 4,31 | - | 4,31 | - | USD |
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| 1713‑1716 | 10,78 | - | 10,78 | - | USD |
