1991-11-30: Wolfgang Amadeus Mozart (1756-1791)

1991-11-23: Christmas and New Year

1991-11-02: Newspaper Anniversaries

1991-10-26: Movies

1991-10-12: Youth Philately 1991

1991-10-05: "TELECOM 91" - Emblem of the Exposition

1991-09-26: King Baudouin Type "Velghe"

1991-09-21: Amnesty International

1991-09-21: Doctors Without Borders

1991-09-14: Mushrooms

1991-09-07: The English Coast at Dover Alfred Wilhelm Finch (1845-1930)

1991-08-31: Royal Academy of Medicine - Front of the Building

1991-07-15: ATM Labels

1991-06-22: King Baudouin, 60th anniversary

1991-06-15: Tourist Publicity

1991-05-27: Isabella of Portugal and Philip the Good (by anonymus)

1991-05-11: Centenary of "Rerum Novarum" - Allegory

1991-05-04: Europa (C.E.P.T.) 1991 - Europe in Space

1991-04-27: Emblem of the Liberal trade union

1991-04-20: New Complex of the Stamp Printing Company in Mechelen

1991-04-06: Sport

1991-03-18: Sculptures 19th century

1991-03-13: Birds of Buzin - Precancelled

1991-02-23: Paintings