8th Congress for the Development of Mineral Resources, 1968 6 Soviet kopek — USSR, 1968
8th Congress for the Development of Mineral Resources, 1968 (USSR, 1968), face value 6 Soviet kopek, “International Congresses, 1968” series. Photo…
- Series
- International Congresses, 1968
- Issue date
- 1968
- Face value
- 6 Soviet kopek
- Colors
- Multicolor
- Print run
- 4,000,000
- Yvert
- SU 3360
- Michel
- SU 3491
- Stanley Gibbons
- SU 3554
- Scott
- SU 3466