1969 SC 3657 BL 58 Cosmonautics Day Scott 3581

1969. Cosmonautics Day.
Catalog numbers: Scott 3581, Standard Collection 3657 BL 58, Michel BL 55, Yvert BF 54.
Condition: MNHOG.
Issued on: April 12, 1969.
Format: Souvenir Sheet.
Perforation: frame 12½ x 12.
Printing: Offset lithography.
Size: 91 x 65 mm.
Colors: Multicolor.
Face value: 80 Russian kopek.
Quantity: 750,000.