Bulgaria
| 01. | Bulgaria Principality (Ottoman Empire vassal) | 1879 - 1908 10 05 | Pic |
| 02. | Bulgaria Kingdom | 1908 10 05 - 1920 | Pic |
| 03. | Bulgaria Kingdom (Bulgaria Principality stamps overprint) | 1908 10 05 - 1920 | Pic |
| 04. | Bulgaria Kingdom (member League of Nations) Bulgaria 1908-1920 stamps overprint | 1920 12 - 1941 | Pic |
| 05. | Bulgaria Kingdom (member League of Nations) | 1920 12 - 1941 | Pic |
| 06. | Bulgaria Kingdom (German satellite) | 1941 03 02 - 1944 | Pic |
| 07. | Bulgaria (Bulgaria Kingdom - German satellite stamps overprint) | 1944 09 09 - 1946 | Pic |
| 08. | Bulgaria (Bulgaria Kingdom stamps overprint) | 1944 09 09 - 1946 | Pic |
| 09. | Bulgaria | 1944 09 09 - 1946 | Pic |
| 10. | Bulgaria People Republic | 1946 09 15 - 1955 | Pic |
| 11. | Bulgaria People Republic (UN member) Bulgaria stamps overprint | 1955 12 14 - 1990 | Pic |
| 12. | Bulgaria People Republic (UN member) | 1955 12 14 - 1990 | Pic |
| 13. | Bulgaria Kingdom (Exile government) | 1963 - 1966 | Pic |
| 14. | Bulgaria Republic | 1990 11 15 - 2007 | Pic |
| 15. | Bulgaria Republic (member EU) | 2007 01 01 - | Pic |
Last update: 2016.05.04
