100 years of the Academy of Sciences, Marin Drinov, Founder 20 ст — Bulgaria, 1969
100 years of the Academy of Sciences, Marin Drinov, Founder (Bulgaria, 1969), face value 20 ст. Photo, catalogue value, details and photo identification.
- Issue date
- 1969
- Face value
- 20 ст
- Colors
- Black | Vermilion
- Print run
- 120,000
- Yvert
- BG 1743
- Michel
- BG 1964
- Stanley Gibbons
- BG 1935
- Scott
- BG 1818