1979 The 100th Anniversary of the Death of Sir Rowland Hill
1979 The 100th Anniversary of the Death of Sir Rowland Hill
Argentina
1979 The 200th Anniversary of the Founding of Viedma and Carmen de Patagones Towns
1979 The 200th Anniversary of the Founding of Viedma and Carmen de Patagones Towns
1979 Ships – International Stamp Exhibition “Buenos Aires ’80”
1979 Ships – International Stamp Exhibition “Buenos Aires ’80”
1979 The 100th Anniversary of the Conquest of the Desert
1979 The 100th Anniversary of the Conquest of the Desert