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The numbering in brackets below the main one is taken from the Catalog of Bulgarian Postal Entities, Part I, Postcards (1879-2007) by Bulphila Publishing House and the Michel Catalog. |
| 1900 year. | Detailed full catalog for 1901 year. | 1902 year. |
| BC number(s): k19011 (PC 18 I), " Ferdinand " |
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| BC number(s): k19012 (PC 18 II), " Ferdinand " |
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| BC number(s): k19013 (PC 19 I), " Ferdinand " |
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| BC number(s): k19014 (PC 20), k19014 карта, k19014 отговор, "Postcard with answer" |
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| BC number(s): k19015 (PC 21), k19015 карта, k19015 отговор, "Postcard with answer" |
| 1900 year. | Detailed full catalog for 1901 year. | 1902 year. |
