Symbol for Hydrogen N20g — Portugal, 2019
Symbol for Hydrogen (Portugal, 2019), face value N20g, “International Year of Periodic Table (2019)” series. Photo, catalogue value, details and photo…
- Series
- International Year of Periodic Table (2019)
- Issue date
- 2019
- Face value
- N20g
- Colors
- Multicolor
- Print run
- 100,000
- Yvert
- PT 4517
- Michel
- PT 4526
- Stanley Gibbons
- PT 4759
- Scott
- PT 4139