Grenada
Näytetään: Grenada - Postimaksumerkit (1861 - 2021) - 1 postimerkit.
1987
Great Scientific Discoveries
9. syyskuu VM: Ei mitään Perforaatio: 14
![[Great Scientific Discoveries, tyyppi AYY]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Grenada/Postage-stamps/AYY-s.jpg)
![[Great Scientific Discoveries, tyyppi AYZ]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Grenada/Postage-stamps/AYZ-s.jpg)
![[Great Scientific Discoveries, tyyppi AZA]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Grenada/Postage-stamps/AZA-s.jpg)
![[Great Scientific Discoveries, tyyppi AZB]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Grenada/Postage-stamps/AZB-s.jpg)
| No. | Tyyppi | D | Väri | Kuvaus |
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| 1713 | AYY | 50C | monivärinen | Isaac Newton holding Apple (Law of Gravity) | 1,09 | - | 1,09 | - | USD |
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| 1714 | AYZ | 1.10$ | monivärinen | John Jacob Berzelius and Symbols of Chemical Elements | 2,17 | - | 2,17 | - | USD |
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| 1715 | AZA | 2$ | monivärinen | Robert Boyle (Law of Pressure and Volume) | 3,26 | - | 3,26 | - | USD |
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| 1716 | AZB | 3$ | monivärinen | James Watt and Drawing of Steam Engine | 4,34 | - | 4,34 | - | USD |
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