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| BC number(s): 5441, 5441UV, "Chinese New Year – Year of the Metal Rat" – one postage stamp in block numbered and a special postal stamp. |
| BC number(s): 5442, "Chinese New Year – Year of the Metal Rat" – one postage stamp in a block and a special postal stamp. |
| BC number(s): 5443, "100 years since the birth of Leda Mileva" – a postage stamp and a special postal stamp. |
| BC number(s): 5443, "100 years since the birth of Leda Mileva" – a block sheet with one postage stamp and a special postal stamp. |
| BC number(s): 5444, "150 years since the establishment of the Bulgarian Exarchate" – one postage stamp and a special postal stamp. |
| BC number(s): 5445, "World Year of Ludwig van Beethoven" – one postage stamp in a block and a special postal stamp. |
| BC number(s): 5446, 5447, 5448, "The Lions of Sofia – sculptural figures of lions" – a series of three postage stamps with variable circulation and a special postal stamp. |
| BC number(s): 5446-5448, "The Lions of Sofia - sculptural figures of lions" - Block sheet with 3 postage stamps and a special postal stamp. |
| BC number(s): 5449-5450, "Bulgarian Urban Heraldry" – a series of two postage stamps and a special postal stamp. |
| BC number(s): 5451, "75 years since the establishment of the United Nations and 65 years since Bulgarias membership in the United Nations" – one postage stamp and a special postmark. |
| BC number(s): 5452, "170 years since the birth of Ivan Vazov" – a postage stamp and a special postage stamp. |
| BC number(s): 5453, 5454, "Europe 2020 – Ancient Postal Routes" – a series of two postage stamps and a special postal stamp. |
| BC number(s): 5455-5456, "Europe 2020 – Ancient Postal Routes" – two postage stamps in a block and a special postal stamp. |
| BC number(s): 5457-5458, "Europe 2020 – Ancient Postal Routes" – four series of postage stamps embedded in a carnet and a special postal stamp. |
| BC number(s): 5459, "International Day of Family Money Transfers June 16" – one postage stamp and a special postal stamp. |
| BC number(s): 5460-5461, "200 years since the discovery of Antarctica and 50 years of Bulgarian scientific research on the Ice Continent" – a series of two postage stamps in a clutch and a special postal stamp. |
| BC number(s): 5462, "Bulgaria – First Coordinator of the Common Agenda for the Black Sea 2020" – one postage stamp in a block and a special postal stamp. |
| BC number(s): 5463, 5463UV, "Great Travelers – Vitus Jonassen Bering" – a postage stamp in a block and a special postal stamp. |
| BC number(s): 5464, "500 years since the death of Raffaello Sanzio" – a postage stamp in a block and a special postal stamp. |
| BC number(s): 5465, "100 Years of the University of National and World Economy" – one postage stamp and a special postal stamp. |
| BC number(s): 5466, "100 years since the death of James Boucher" – one postage stamp and a special postage stamp. |
| BC number(s): 5467, "200 Years of World Circus Activity and 20 Years of Academic Circus "Balkanski" - two postage stamps in a block and a special postal stamp. |
| BC number(s): 5468, "Mahatma Gandhi" – one postage stamp in a block and a special postal stamp. |
| BC number(s): 5469, 5470, 5471, 5472, 5469K1, "World Writers: 100 Years Since the Birth of Gianni Rodari, 100 Years Since the Birth of Arthur Haley, 100 Years Since the Birth of Isaac Asimov and 100 Years Since the Birth of Ray Bradbury" – a series of four postage stamps and a special postage stamp. |
| BC number(s): 5473, "100 years since the birth of Valeri Petrov" – a postage stamp in a block and a special postal stamp. |
| BC number(s): 5474, "85 years since the birth of Hristo Yavashev" – a postage stamp in a block and a special postal stamp. |
| BC number(s): 5475, "25 years since the establishment of the National Social Security Institute" – one postage stamp and a special postal stamp. |
| BC number(s): 5476, 5476, 5476UV, "Gabrovo Carnival" – one postage stamp in a block and a special postal stamp. |
| BC number(s): 5477, "75 years of the Agricultural University - Plovdiv" - one postage stamp and a special postal stamp. |
| BC number(s): 5478, 5478UV, "Friendship with Kazakhstan – 175 years since the birth of Abai Kunanbayev and 1150 years since the birth of Al-Farabi" – two postage stamps in a block and a special postal stamp. |
| BC number(s): 5479, "Christmas 2020" – one postage stamp and a special postal stamp. |
| BC number(s): 5480, "125 years since the establishment of the Bulgarian Chamber of Commerce and Industry" – one postage stamp and a special postal stamp. |
| BC number(s): 5481, 5481UV, "140 Years of Bulgarian Lev and 135 Years of Bulgarian Banknotes" – one postage stamp in a block and a special postal stamp. |
| BC number(s): 5482, "85 years since the formation of Emergency Medical Care" – one postage stamp and a special postal stamp. |
| BC number(s): 5483, "Eminent Bulgarian philatelists – 80 years since the birth of Ivan Slavkov" – one postage stamp with one vignette and a special postal stamp. |
| BC number(s): 5484, "Types of chess" – one postage stamp in a block and a special postal stamp. |
| BC number(s): 5485-5488, "Fauna – Protected Insects (Beetles)" – a series of four postage stamps printed in a block sheet and a special postal stamp. |
| BC number(s): 5485-5488, "Fauna – Protected Insects (Beetles)" – two series printed in block sheet on non-rubberized paper with UV threads and a special postal stamp. |
| BC number(s): 5489, "Cosmos" – one postage stamp in a block and a special postal stamp. |
| BC number(s): 5490, 5491, "Cartoons of famous Bulgarian personalities" – a series of two postage stamps and a special postal stamp. |
| BC number(s): 5492, 5493, "Notable Bulgarian Artists" – a series of two postage stamps and a special postal stamp. |