Studying Solar Activity 40 Soviet kopek — USSR, 1957
Studying Solar Activity (USSR, 1957), face value 40 Soviet kopek, “International Geophysical Year (I)” series. Photo, catalogue value, details and photo…
- Series
- International Geophysical Year (I)
- Issue date
- 1957
- Face value
- 40 Soviet kopek
- Colors
- Multicolor
- Print run
- 1,000,000