semiconductor plant in Botevgrad 1 ст — Bulgaria, 1971
semiconductor plant in Botevgrad (Bulgaria, 1971), face value 1 ст, “Construction of socialism” series. Photo, catalogue value, details and photo…
- Series
- Construction of socialism
- Issue date
- 1971
- Face value
- 1 ст
- Colors
- Light blue violet
- Print run
- 20,000,000
- Yvert
- BG 1897
- Michel
- BG 2123
- Stanley Gibbons
- BG 2108
- Scott
- BG 1984