|  |  | 
| The numbering in brackets below the main one is taken from the Catalog of Bulgarian Postal Entities, Part II, covers with Tax Mark (1953-1961) by Bulphila Publishing House and the Michel Catalog. | 
| 1914 year. | Detailed full catalog for 1915 year. | 1916 year. | 
| 1914 year. | Detailed full catalog for 1915 year. | 1916 year. |