1973 The 50th Anniversary of the Death of Alfons Petzold
1973 Drug Abuse
1973 The 100th Anniversary of the Birth of Dr. H.C. Theodor Körner
1973 Aviation Anniversary 1973
1973 The 100th Anniversary of the Birth of Otto Loewi
1973 The 25th Anniversary of the Primary Association of the Austrian Social Security Carrier
1973 EUROPA Stamps CEPT
1973 The 25th Anniversary of the Dornbirn Fair
1973 Sports - Steeplechaser Military Pentathlon
1973 The 100th Anniversary of the Birth of Leo Slezak
1973 The 39th Convention of the International Institute of Statistics
1973 The 100th Anniversary of the Discovery of Franz Josef Land
1973 The 100th Anniversary of the World Meteorological Organization
1973 The 13th IULCS Convention in Vienna
1973 The 100th Anniversary of the Birth of Max Reinhardt
1973 The 100th Anniversary of the Vienna Trotting Association
1973 The 50th Anniversary of the Death of Ferdinand Hanusch
1973 The 50th Anniversary of Interpol
1973 Europhot Convention, Vienna
1973 The 100th Anniversary of Vienna's First Fresh Water Aqueduct
1973 Landscapes of Austria (Not included - Additional to the definitive0
1973 Day of the Stamp
1973 Christmas
1973 The 50th Anniversary of the Nobel Prize for Chemistry Awarded to Fritz Pregl