Austria
1975 The 125th Anniversary of Historical Monuments Preservation in Austria
1975 The 125th Anniversary of Historical Monuments Preservation in Austria
1974 The 100th Anniversary of the Birth of Franz Schmidt
1974 The 100th Anniversary of the Birth of Franz Schmidt
1974 The 175th Anniversary of the Death of Carl Ditters von Dittersdorf
1974 The 175th Anniversary of the Death of Carl Ditters von Dittersdorf
1974 The 25th Anniversary of the Sports Pool
1974 The 25th Anniversary of the Sports Pool
1974 The 100th Anniversary of the Universal Postal Union (UPU)
1974 The 100th Anniversary of the Universal Postal Union (UPU)