Ecuador

1966 Pope Paul VI

1966 Airmail – Birds

1966 Birds

1966 Airmail – The 700th Anniversary of the Birth of Dante & the 400th Anniversary of the Birth of Galilei

1966 Airmail – The 700th Anniversary of the Birth of Dante & the 400th Anniversary of the Birth of Galilei

1966 Airmail – The 700th Anniversary of the Birth of Dante, and the 400th Anniversary of the Birth of Galilei

1966 The 700th Anniversary of the Birth of Dante, and the 400th Anniversary of the Birth of Galilei

1966 Airmail – Achievements in Space Exploration

1966 Airmail – Achievements in Space Exploration

1966 Airmail – Achievements in Space Exploration