Nicaragua
Viser nå: Nicaragua - Postfrimerker (1862 - 2021) - 1 frimerker.
1971
Physical Laws and Mathematical Formulas
15. May VM: Ingen Gravering: De La Rue. Perforering: 13
Nr. | Type | D | farge | Beskrivelse | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1663 | AIG | 10C | mangefarget | Using fingers to count | 0.27 | - | 0.27 | - | USD | ||||||||
1664 | AIH | 15C | mangefarget | Newton's Law of Gravity | 0.27 | - | 0.27 | - | USD | ||||||||
1665 | AII | 20C | mangefarget | Einstein's Theory | 0.27 | - | 0.27 | - | USD | ||||||||
1666 | AIJ | 1Cord | mangefarget | Tsiolkovsky Rocket Equation | 0.81 | - | 0.54 | - | USD | ||||||||
1667 | AIK | 2Cord | mangefarget | Maxwell's Law | 1.61 | - | 1.07 | - | USD |