Colombia
1978 Airmail – National Stamp Exhibition “ESPAMER ’78” – Bogota, Colombia
1978 Airmail – National Stamp Exhibition “ESPAMER ’78” – Bogota, Colombia
1978 Airmail – National Stamp Exhibition “ESPAMER ’78” – Bogota, Colombia
1978 Airmail – National Stamp Exhibition “ESPAMER ’78” – Bogota, Colombia
1978 The 100th Anniversary of the Death of General Tomas Cipriano de Mosquera, 1789-1878
1978 The 100th Anniversary of the Death of General Tomas Cipriano de Mosquera, 1789-1878
1978 Airmail – The 50th Anniversary of Presidential Guard Battalion
1978 Airmail – The 50th Anniversary of Presidential Guard Battalion
1978 Airmail – The 1000th Anniversary of Castilian Language
1978 Airmail – The 1000th Anniversary of Castilian Language