![Bulgaria, an ancient envelope since 1968. No. 2798/99](/uploaded/0/005002/5002965/thumb/5002965_b_1575895043.jpg)
Bulgaria, an ancient envelope since 1968. No. 2798/99
~051 €
ended
stoian76
![Bulgaria first-day air mail envelope No. 1421/22 of 1963](/uploaded/0/005124/5124110/thumb/5124110_b_1582537014.jpg)
Bulgaria first-day air mail envelope No. 1421/22 of 1963
~154 €
ended
stoian76
![Bulgaria first day insect envelope from 2020](/uploaded/1/004929/4929066/thumb/4929066_b_1612354777.jpg)
Bulgaria first day insect envelope from 2020
~770 €
1
ended
stoian76
![Bulgaria Illustrated envelope with a tax mark from 2020. Insects](/uploaded/1/005037/5037806/thumb/5037806_b_1612354117.jpg)
Bulgaria Illustrated envelope with a tax mark from 2020. Insects
~128 €
1
ended
stoian76