1976 Sc 4510-4513 First Manned Space Flight by Yuri Gagarin Scott 4427-4430

1976. First Manned Space Flight by Yuri Gagarin.
Condition: MNHOG.
Catalogs: Scott 4427-4430, Standard Collection 4510-4513, Michel 4460-4463, Yt 4240-4243.
Issued on: April 12, 1976.
Perforation: comb 11¾.
Printing: Offset lithography and Recess.
Size: 65 x 32.5 mm.
Colors: Multicolor.
Face value: 4 Russian kopek; 6 Russian kopek; 10 Russian kopek; 12 Russian kopek.
Quantity: 6,600,000; 6,300,000; 5,300,000; 4,400,000.