1900-01-01:

1947-12-06:

1968-01-05:

1971-05-18:

1990-11-22:

2003-01-01:

1900-01-01:

BULGARIA +

RUSSIA +

OTTOMAN TURKEY +

1908-10-05:

BULGARIA +

RUSSIA +

1911-01-25:

BULGARIA

1918-09-29:

BULGARIA +

ALLIED POWERS +

FRANCE +

1919-11-27:

BULGARIA

1940-02-15:

BULGARIA +

GERMANY +

1944-06-01:

BULGARIA

1944-09-09:

BULGARIA +

SOVIET UNION +

UKRAINE +

1944-10-28:

BULGARIA +

SOVIET UNION +

1947-09-15:

BULGARIA

2007-01-01:

BULGARIA +

EUROPEAN UNION +

1900-01-01:

  Varna

1949-12-20:

  Stalin

1956-10-20:

  Varna

1900-01-01:

  VARNA

1949-09-22:

  STALIN

1956-10-20:

  VARNA

2003-01-01:

  SEVERNA BALGARIYA

2011-01-01:

  SEVEREN-SEVEROIZTOCHEN

1900-01-01:

1949-09-22:

1956-10-20:

1987-08-01:

2003-01-01:

2011-01-01: