1964 Sc 2923-2925 Cosmonautics Day Scott 2883imp-2884imp, 2889imp

1964. Cosmonautics Day.
Catalog numbers: Scott 2883imp-2884imp, 2889imp, Standard Collection 2923-2925, Michel 2895B-2897B, Yvert 2802nd-2803nd, 2808nd.
Condition: MNHOG.
Issued on: April 10, 1964.
Perforation: Imperforated.
Printing: Photogravure.
Size: 40 x 28 mm.
Colors: Multicolor.
Face value: 4 Russian kopek; 6 Russian kopek; 12 Russian kopek.
Quantity: 1,000,000; 1,000,000; 1,000,000.