South America
1981 The 100th Anniversary of the First Argentine Coins
1981 The 100th Anniversary of the First Argentine Coins
1981 Football – International Stamp Exhibition “ESPAMER ’81” – Buenos Aires, Argentina
1981 Football – International Stamp Exhibition “ESPAMER ’81” – Buenos Aires, Argentina
1981 Postal Union of the Americas & Spain Technical Training School – Buenos Aires, Argentina – Overprint on Stamp of 1981
1981 Postal Union of the Americas & Spain Technical Training School – Buenos Aires, Argentina – Overprint on Stamp of 1981
2002 The 100th Anniversary of the Pan American Health Organisation, PAHO
2002 The 100th Anniversary of the Pan American Health Organisation, PAHO
2002 The 150th Anniversary of the Foundation of the City of San Carlos de Bariloche, Rio Negro Province
2002 The 150th Anniversary of the Foundation of the City of San Carlos de Bariloche, Rio Negro Province
2002 The 150th Anniversary of the Birth of Doctor Francisco P. Moreno, 1852-1919
2002 The 150th Anniversary of the Birth of Doctor Francisco P. Moreno, 1852-1919