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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. |
| 1953 year. | Detailed full catalog for 1954 year. | 1955 year. |
| BC number(s): p19541 (PL 4 I A a), p19542 (PL 4 I A b), p19543 (PL 4 I A c), p19544 (PL 4 I A e), "Mother with children" - a postal envelope with a sign for the price of the postal service. |
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| BC number(s): p19545 (PL 4 I B c), p19546 (PL 4 I B d), "Mother with children" - a postal envelope with a sign for the price of the postal service. |
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| BC number(s): p19547 (PL 4 II A a), p19548 (PL 4 II A b), "Mother with children" - a postal envelope with a sign for the price of the postal service. |
| 1953 year. | Detailed full catalog for 1954 year. | 1955 year. |
