[Double-Signed sheet of 3 Stamps.] Den Kosmonavtiki.
Russia: Pochta SSSR, 1967. 80 ×115 mm. Soviet “Cosmonautic Day” stamp sheet, with the picture the spaceflight Vostok. Singed twice by Alexey Leonov the first human to conduct a spacewalk. More
Russia: Pochta SSSR, 1967. 80 ×115 mm. Soviet “Cosmonautic Day” stamp sheet, with the picture the spaceflight Vostok. Singed twice by Alexey Leonov the first human to conduct a spacewalk. More
Russia: Pochta SSSR, 1967. 75 ×125 mm. Soviet space program stamp sheet, with the picture of the spacewalk. Signed three times by Alexey Leonov the first human to conduct a spacewalk. More