1978 The 100th Anniversary of the Bank of Buenos Aires
1978 The 100th Anniversary of the Bank of Buenos Aires
South America
1978 The 30th Anniversary of the Death of General Manuel Savio, Director of Military Manufacturing
1978 The 30th Anniversary of the Death of General Manuel Savio, Director of Military Manufacturing
1978 Technical Co-operation among Developing Countries Conference, Buenos Aires
1978 Technical Co-operation among Developing Countries Conference, Buenos Aires
1978 Birds – Inter-American Philatelic Exhibition
1978 Birds – Inter-American Philatelic Exhibition
2004 Legends and Popular Traditions of Argentina
2004 Legends and Popular Traditions of Argentina
2004 Argentine Philately – Naval Carriers
2004 Argentine Philately – Naval Carriers