1990-12-25: Christmas 1990

1990-10-22: Space Research / Exploration

1990-10-16: OLYMPHILEX ’90, Varna

1990-10-09: Transport

1990-09-17: 150th birth anniversary of Exarch Josif I

1990-08-30: Aircraft

1990-08-08: Butterflies (1990)

1990-07-13: Summer Olympic Games 1992 - Barcelona (I)

1990-06-19: Prehistoric Animals

1990-06-15: Alphonse de Lamartine (1790-1869), French Poet

1990-05-25: Belgica ’90

1990-05-13: 125th Anniv. of International Telecommunication Union

1990-05-01: Centenary of Labour Day

1990-04-24: Dimitar Chorbadjiski-Chudomir (1890-1967)

1990-04-10: International Stamp Exhibition London 1990

1990-04-06: Essen'90

1990-03-26: FIFA World Cup 1990 - Italy (II)

1990-03-23: Painting from foreign painters

1990-02-23: Anniversary

1990-01-17: Great Navigators