1961 SC 2495 4th Soviet space ship satellite Scott 2492

1961. 4th Soviet space ship satellite.
Catalog numbers: Scott 2492, Standard Collection 2495, Michel 2498, Yvert 2427.
Issued on: June 8, 1961.
Perforation: frame 11½.
Printing: Photogravure.
Size: 28 x 40 mm.
Colors: Bluish green, greenish blue.
Face value: 4 Russian kopek.
Print run: 3,500,000.