Nicaragua
Viser nå: Nicaragua - Postfrimerker (1862 - 2021) - 1 frimerker.
1971
Airmail - Physical Laws and Mathematical Formulas
15. May VM: Ingen Gravering: De La Rue. Perforering: 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)
| Nr. | Type | D | farge | Beskrivelse |
|
|
|
|
|
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1668 | AIL | 25C | mangefarget | Napier's Law, logarithms | 0.27 | - | 0.27 | - | USD |
|
|
||||||
| 1669 | AIM | 30C | mangefarget | Pythagorean theorem | 0.27 | - | 0.27 | - | USD |
|
|
||||||
| 1670 | AIN | 40C | mangefarget | Boltzmann equation | 0.27 | - | 0.27 | - | USD |
|
|
||||||
| 1671 | AIO | 1Cord | mangefarget | de Broglie hypothesis | 0.81 | - | 0.27 | - | USD |
|
|
||||||
| 1672 | AIP | 2Cord | mangefarget | Archimedes’ principle | 1.09 | - | 0.81 | - | USD |
|
|
