1990 “Exfivia 90” National Stamp Exhibition
1990 “Exfivia 90” National Stamp Exhibition
South America
1990 The Fourth Andean Council of Presidents, La Paz
1990 The Fourth Andean Council of Presidents, La Paz
1990 Visit of President Rodrigo Borja Cevallos of Ecuador
1990 Visit of President Rodrigo Borja Cevallos of Ecuador
1990 Unification of Germany – International Stamp Exhibition “PHILATELIA ’90” – Berlin
1990 Unification of Germany – International Stamp Exhibition “PHILATELIA ’90” – Berlin
1990 The 700th Anniversary of the Swiss Confederacy
1990 The 700th Anniversary of the Swiss Confederacy
1990 The 400th Anniversary of the Larecaja District
1990 The 400th Anniversary of the Larecaja District
1990 The 500th Anniversary of the Discovery of America by Columbus, 1992
1990 The 500th Anniversary of the Discovery of America by Columbus, 1992