Nicaragua
Montre maintenant: Nicaragua - Timbres-Poste (1862 - 2021) - 1 Timbres-poste.
1971
Airmail - Physical Laws and Mathematical Formulas
15. mai WM: Aucun Gravure: De La Rue. Perforation: 13
![[Airmail - Physical Laws and Mathematical Formulas, type AIL]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Nicaragua/Postage-stamps/AIL-s.jpg)
![[Airmail - Physical Laws and Mathematical Formulas, type AIM]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Nicaragua/Postage-stamps/AIM-s.jpg)
![[Airmail - Physical Laws and Mathematical Formulas, type AIN]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Nicaragua/Postage-stamps/AIN-s.jpg)
![[Airmail - Physical Laws and Mathematical Formulas, type AIO]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Nicaragua/Postage-stamps/AIO-s.jpg)
![[Airmail - Physical Laws and Mathematical Formulas, type AIP]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Nicaragua/Postage-stamps/AIP-s.jpg)
| No. | Genre | D | Couleur | Description |
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| 1668 | AIL | 25C | multicouleurs | Napier's Law, logarithms | 0,27 | - | 0,27 | - | USD |
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| 1669 | AIM | 30C | multicouleurs | Pythagorean theorem | 0,27 | - | 0,27 | - | USD |
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| 1670 | AIN | 40C | multicouleurs | Boltzmann equation | 0,27 | - | 0,27 | - | USD |
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| 1671 | AIO | 1Cord | multicouleurs | de Broglie hypothesis | 0,82 | - | 0,27 | - | USD |
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| 1672 | AIP | 2Cord | multicouleurs | Archimedes’ principle | 1,09 | - | 0,82 | - | USD |
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