| Year | Date |
Description | SG | Michel | Scott | Yvert | ÅE | KSissue | KS |
| 1959 |
30.06.1959 |
Birds |
1140-1145 |
1116-1121 |
1050-1055 |
968-973 |
1-6 |
1959.01 |
1-6 |
| 1961 |
31.03.1961 |
Birds |
1236-1241 |
1217-1222 |
1149-1154 |
1060-1065 |
7-12 |
1961.01 |
7-12 |
| 1965 |
20.04.1965 |
Birds |
1517-1524 |
1529-1536 |
1395-1402 |
1315-1322 |
13-20 |
1965.01 |
13-20 |
| 1967 |
28.01.1967 |
Hunting |
1682-1684 |
1691-1693 |
1564-1566 |
1483-1485 |
21-23 |
1967.01 |
21-23 |
| 1968 |
29.07.1968 |
Sofia Zoo |
1813-1814 |
1819-1820 |
1689-1690 |
1602-1603 |
24-25 |
1968.01 |
24-25 |
| 1968 |
28.10.1968 |
Srebirna wildlife reservation |
1832-1837 |
1836-1841 |
1708-1713 |
1627-1632 |
26-31 |
1968.02 |
26-31 |
| 1976 |
27.03.1976 |
Waterfowl |
2455-2460 |
2474-2479 |
2307-2312 |
2194-2199 |
32-37 |
1976.01 |
32-37 |
| 1978 |
01.09.1978 |
Woodpeckers |
2680-2685 |
2701-2706 |
2518-2523 |
2399-2404 |
38-43 |
1978.01 |
38-43 |
| 1980 |
28.08.1980 |
European nature conservation year |
|
2916-2920/B105 |
|
BF95B |
44-48 |
1980.01 |
44-48 |
| 1981 |
07.04.1981 |
Birds |
2930-2934 |
2982-2986 |
2739F-2739K |
2617-2621 |
49-53 |
1981.01 |
49-53 |
| 1984 |
06.07.1984 |
Pigeons and doves |
3154-3157 |
3273-3276 |
2974-2977 |
2846-2849 |
54-57 |
1984.01 |
54-57 |
| 1984 |
02.11.1984 |
WWF, Dalmatian Pelican |
3183-3186 |
3303-3306 |
3008-3011 |
2869-2872 |
58-61 |
1984.02 |
58-61 |
| 1985 |
27.12.1985 |
Hunting dogs |
3306-3309 |
3429-3432 |
3128-3131 |
2975-2978 |
62-65 |
1985.01 |
62-65 |
| 1986 |
29.08.1986 |
Nature and environment protection |
MS3363 |
3493/B167 |
SS3188 |
BF140 |
66 |
1986.01 |
66 |
| 1987 |
12.10.1987 |
Birds |
3466-3471 |
3607-3612 |
3281-3286 |
3119-3124 |
67-72 |
1987.01 |
67-72 |
| 1987 |
12.10.1987 |
Birds |
|
3607-3612 |
3286a |
|
|
1987.02 |
73-78 |
| 1988 |
06.05.1988 |
Birds |
3513-3518 |
3689-3694 |
3328A-3328F |
3222-3227 |
73-78 |
1988.01 |
79-84 |
| 1988 |
20.05.1988 |
Sofia Zoo |
3522-3524 |
3660-3662 |
3332-3334 |
3171-3173 |
79-81 |
1988.02 |
85-87 |
| 1988 |
20.05.1988 |
Sofia Zoo |
|
3660-3662 |
3334a |
|
|
1988.03 |
88-90 |
| 1989 |
31.08.1989 |
Natural history museum |
3627 |
3778 |
3433 |
3261 |
82 |
1989.01 |
91 |
| 1989 |
12.10.1989 |
Environment protection |
MS3637 |
3782-3783/B206 |
SS3437 |
BF161 |
83-84 |
1989.02 |
92-93 |
| 1991 |
11.02.1991 |
Farm animals |
3742 |
3884 |
3593 |
3361 |
85 |
1991.01 |
94 |
| 1992 |
23.12.1992 |
Owls |
3892-3897 |
4032-4037 |
3749-3754 |
3492-3497 |
86-91 |
1992.01 |
95-100 |
| 1993 |
25.11.1993 |
Hunting |
3940-3941 |
4083-4084 |
3797-3798 |
3535-3536 |
92-93 |
1993.01 |
101-102 |
| 1994 |
27.04.1994 |
Prehistoric animals |
3963 |
4109-4114 |
3819 |
|
94 |
1994.01 |
103 |
| 1995 |
23.06.1995 |
Nature protection conference |
|
B229 |
SS3862 |
BF183 |
95 |
1995.01 |
104 |
| 1995 |
29.06.1995 |
Antarctic animals |
4012-4013 |
4161-4162 |
3867-3868 |
3606-3607 |
96-97 |
1995.02 |
105-106 |
| 1999 |
15.03.1999 |
Bulgaria '99 |
MS4236 |
4381-4384/B237 |
4069 |
BF192 |
98-101 |
1999.01 |
107-110 |
| 1999 |
13.04.1999 |
Europa |
4239 |
4387 |
4072 |
3814A |
102 |
1999.02 |
111 |
| 1999 |
06.10.1999 |
Birds |
4273-4276 |
4421-4424 |
4089-4092 |
3832-3835 |
103-106 |
1999.03 |
112-115 |
| 2000 |
22.03.2000 |
Storks |
MS4299 |
4449/B242 |
SS4127 |
|
107 |
2000.01 |
116 |
| 2001 |
18.04.2001 |
Europa |
4360 |
4512 |
4182 |
3898 |
108 |
2001.01 |
117 |
| 2001 |
18.04.2001 |
Europa |
|
4512 |
4182 |
|
|
2001.02 |
118 |
| 2001 |
24.05.2001 |
Vultures |
4363-4366 |
4515-4518 |
4185-4188 |
3907-3910 |
109-112 |
2001.03 |
119-122 |
| 2002 |
29.01.2002 |
Balkanmax 2002 |
4389 |
4545-4546/B253 |
4209b |
|
113 |
2002.01 |
123 |
| 2002 |
20.03.2002 |
National Antarctic expedition |
|
4549/B254 |
4212a |
|
114 |
2002.02 |
124 |
| 2002 |
10.05.2002 |
Domestic fowl races |
4406-4409 |
4563-4566 |
4226 |
3941-3944 |
115 |
2002.03 |
125 |
| 2004 |
28.07.2004 |
Ecology |
MS4501 |
4659/B267 |
4314a |
|
116 |
2004.01 |
126 |
| 2006 |
09.05.2006 |
Harriers |
4582-4585 |
4753-4756 |
4391-4394 |
4098-4101 |
|
2006.01 |
127-130 |
| 2007 |
28.02.2007 |
100th birth anniversary of Emilian Stanev |
4616 |
4786 |
4421 |
4126 |
|
2007.01 |
131 |
| 2007 |
10.09.2007 |
Ropotamo |
MS4549 |
4820/B293 |
4453a |
BF240 |
|
2007.02 |
132 |
| 2007 |
10.09.2007 |
Ropotamo |
|
|
|
|
|
2007.03 |
133 |
| 2007 |
11.09.2007 |
Protected birds |
MS4650 |
4822-4825/B294 |
4454a |
4158-4161 |
|
2007.04 |
134-137 |
| 2007 |
11.09.2007 |
Protected birds |
|
|
|
|
|
2007.05 |
138-141 |
| 2008 |
10.02.2008 |
International polar year |
|
4838/B297 |
4464b |
|
|
2008.01 |
142 |
| 2008 |
14.05.2008 |
Sofia Zoo |
|
4855/B299 |
4476e |
|
|
2008.02 |
143 |
| 2008 |
21.07.2008 |
Strandzha |
|
4861/B303 |
4481b |
|
|
2008.03 |
144 |
| 2009 |
02.03.2009 |
Balkan |
4702-4703 |
4885A,4886A |
4498a-b |
4210-4211 |
|
2009.01 |
145-146 |
| 2009 |
02.03.2009 |
Balkan |
MS4704 |
4885B,4886B/B308 |
4499a-b |
BF252 |
|
2009.02 |
147-148 |
| 2009 |
27.03.2009 |
Preserve the polar regions and glaciers |
|
4889-4890/B310 |
4502a-b |
|
|
2009.03 |
149-150 |
| 2009 |
30.05.2009 |
Owls |
4734-4737 |
4914-4917 |
4518a-d |
|
|
2009.04 |
151-154 |
| 2010 |
24.11.2010 |
Region |
MS4781 |
4976/B335 |
4558c |
|
|
2010.01 |
155 |
| 2010 |
22.12.2010 |
Balkanfila |
|
4981/B337 |
|
|
|
2010.02 |
156 |
| 2011 |
28.04.2011 |
Europa |
4793 |
4990A |
4568 |
4276 |
|
2011.01 |
157 |
| 2011 |
28.04.2011 |
Europa |
MS4794 |
4990C/B340 |
|
4276/BF280 |
|
2011.02 |
158 |
| 2011 |
28.04.2011 |
Europa |
4793a |
4992/MH10 |
4570 |
|
|
2011.03 |
159 |
| 2011 |
10.06.2011 |
Regions |
MS4798 |
4996/B343 |
4573a |
|
|
2011.04 |
160 |
| 2012 |
07.04.2012 |
Bulgarian Antarctic expedition |
4822 |
5034 |
4597 |
|
|
2012.01 |
161 |
| 2012 |
07.04.2012 |
Bulgarian Antarctic expedition |
|
5035/B355 |
|
|
|
2012.02 |
162 |
| 2013 |
22.05.2013 |
Mantaritsa nature reserve |
MS4875 |
5099/B372 |
SS4643 |
|
|
2013.01 |
163 |
| 2013 |
17.06.2013 |
Regions |
MS4836 |
5108/B375 |
4648d |
|
|
2013.02 |
164 |
| 2014 |
25.10.2014 |
Songbirds |
4930-4933 |
5178-5181 |
4692-4695 |
|
|
2014.01 |
165-168 |
| 2014 |
25.10.2014 |
Songbirds |
MS4934 |
5178-5181/B395 |
|
|
|
2014.02 |
169-172 |
| 2016 |
13.09.2016 |
Bulgaria - Israel, bird migration |
|
5270 |
|
|
|
2016.01 |
173 |
| 2016 |
07.10.2016 |
Wiki loves earth, photo competition |
|
5274 |
4775 |
|
|
2016.02 |
174 |
| 2016 |
07.10.2016 |
Wiki loves earth, photo competition |
|
5274 |
4775 |
|
|
2016.03 |
175 |
| 2017 |
21.10.2017 |
Sparrows |
|
5334-5337 |
4825-4828 |
|
|
2017.01 |
176-179 |
| 2017 |
21.10.2017 |
Sparrows |
|
5338A-5341A/B441 |
4828a-d |
|
|
2017.02 |
180-183 |
| 2018 |
19.10.2018 |
Extinct species |
|
5386 |
4865 |
|
|
2018.01 |
184 |
| 2018 |
19.10.2018 |
Extinct species |
|
5390A |
4866a |
|
|
2018.02 |
185 |
| 2018 |
19.10.2018 |
Extinct species |
|
5390A |
|
|
|
2018.03 |
186 |
| 2019 |
01.02.2019 |
Via Pontica bird migratory route |
|
|
4880-4883 |
|
|
2019.01 |
187-190 |
| 2019 |
01.02.2019 |
Via Pontica bird migratory route |
|
|
4886a |
|
|
2019.02 |
191-194 |
| 2019 |
01.02.2019 |
Via Pontica bird migratory route |
|
|
|
|
|
2019.03 |
195-198 |
| 2019 |
24.04.2019 |
Europa |
|
|
4892-4893 |
|
|
2019.04 |
199-200 |
| 2019 |
24.04.2019 |
Europa |
|
|
|
|
|
2019.05 |
201-202 |
| 2019 |
24.04.2019 |
Europa |
|
|
|
|
|
2019.06 |
203-206 |
| 2020 |
21.07.2020 |
Antarctica |
|
|
4940b |
|
|
2020.01 |
207 |
| 2021 |
30.12.2021 |
Game birds |
|
|
|
|
|
2021.01 |
208-211 |
| 2021 |
30.12.2021 |
Game birds |
|
|
|
|
|
2021.02 |
212-215 |
| 2023 |
21.10.2023 |
Vulture |
|
|
|
|
|
2023.01 |
216 |
| 2023 |
01.12.2023 |
Endangered birds of Bulgaria |
|
|
|
|
|
2023.02 |
217-220 |
| 2023 |
01.12.2023 |
Endangered birds of Bulgaria |
|
|
|
|
|
2023.03 |
221-224 |
| 2023 |
01.12.2023 |
Endangered birds of Bulgaria |
|
|
|
|
|
2023.04 |
225-228 |
