Sales Exhibition for Scientific Inventions of Youth 13 ст — Bulgaria, 1989
Sales Exhibition for Scientific Inventions of Youth (Bulgaria, 1989), face value 13 ст. Photo, catalogue value, details and photo identification.
- Issue date
- 1989
- Face value
- 13 ст
- Colors
- Multicolor
- Yvert
- BG 3274
- Michel
- BG 3790
- Stanley Gibbons
- BG 3644
- Scott
- BG 3497