1978 Sc 4763 Cosmonautic day Scott 4655

1978. Cosmonautic day.
Catalog numbers: Scott 4655, Standard Collection 4763, Michel 4713, Yvert 4471.
Condition: MNHOG.
Issued on: April 12, 1978.
Perforation: comb 12¼ x 12.
Printing: Offset lithography.
Size: 29 x 41 mm.
Colors: Multicolor.
Face value: 6 Russian kopek.
Quantity: 6,000,000.