Argentina
1978 -1979 The 200th Anniversary of General San Martin WM: 13
1978 -1979 The 200th Anniversary of General San Martin WM: 13
1978 The 100th Anniversary of the Bank of Buenos Aires
1978 The 100th Anniversary of the Bank of Buenos Aires
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