1977 Sc 4621. Birth Centenary of G.Ya.Sedov. Scott 4541

1977. Birth Centenary of G.Ya.Sedov.
Catalogs: Scott 4541, Standard Collection 4621, Michel 4571, Yt 4345.
Issued on: 1977-01-25.
Perforation: comb 11½
Printing: Photogravure
Size: 40 x 28 mm
Colors: Blue-green, black, pink
Face value: 4 Russian kopek
Print run: 4,000,000