1991-12-18: Stamp Day

1991-11-11: Christmas 1991

1991-11-03: Nature Protection : Flowers

1991-11-03: Art 1991

1991-09-30: Bratislava and Prague motifs

1991-09-27: Andrej Hlinka

1991-09-02: Biennial Exhibition of Book Illustrations for Children 1991

1991-08-28: Scenic Views

1991-08-09: Jan Palach Foundation

1991-06-03: Czechoslovak castles

1991-05-20: 30th Anniversary of Antarctic Treaty

1991-05-10: Centenary of International Exhibition, Prague

1991-05-06: Europa (C.E.P.T.) 1991 - Europe in Space

1991-02-18: Anniversary Personalities 1991

1991-02-04: Anniversaries 1991

1991-01-10: Czech Scouting, 80th Ann.and A.B.Svojsík, 110th Birth Ann.

1991-01-10: European Judo Championship, Prague