40th anniversary of the national revolution (design): "Under the dictatorship from 1926 to 1974, the state and the church were allied in the struggle to combat materialism, communism, and the dilution of Portuguese customs and traditions through foreign influences". ("The history of Portugal", James Maxwell Anderson, Greenwood Press, Westport [Connecticut], 2000: 5)
country: Portugal
year: 1966
Yvert: 984
![40th anniversary of the national revolution (design): "Under the dictatorship from 1926 to 1974, the state and the church were allied in the struggle to combat materialism, communism, and the dilution of Portuguese customs and traditions through foreign influences". ("The history of Portugal", James Maxwell Anderson, Greenwood Press, Westport [Connecticut], 2000: 5)](https://encyclopaediaphilatelica.net/storage/uploads/65c50dd10a78e-phpgdfc68.jpeg)