Liquid Helium Superfluidity, P. Kapitsa, 1938 1.75 ₽ — Russia, 2000
Liquid Helium Superfluidity, P. Kapitsa, 1938 (Russia, 2000), face value 1.75 ₽, “20th Century Science” series. Photo, catalogue value, details and photo…
- Series
- 20th Century Science
- Issue date
- 2000
- Face value
- 1.75 ₽
- Colors
- Multicolor
- Print run
- 300,000
- Yvert
- RU 6477
- Michel
- RU 829
- Stanley Gibbons
- RU 6930
- Scott
- RU 6597e