American space travel - block of postage stamps mint, block 56, Paraguay

The perforated “American Space Travel” stamp block from Paraguay contains an airmail stamp for 50.00 Guarani. It shows the mighty Satur-I launcher from 1961. On the edge of the block we find four portraits of American astronauts. Block 56, mint never hinged.
* In 1962, John Glenn became the first American to orbit our terrestrial globe in his Mercury space capsule * Malcolm Scott Carpenter flew aboard his Mercury capsule called Friendship 7 in February 1962. On its flight it circled the earth three times. * Gordon Cooper, astronaut * Walter Schirra, astronaut