1968 Sc 3528. First Space Link of “Cosmos” Satellites. Scott 3452

1968. First Space Link of “Cosmos” Satellites.
Catalogs: Scott 3452, Standard Collection 3528, Michel 3477, Yt 3348.
Issued on: 1968-03-29.
Perforation: comb 11½
Printing: Photogravure
Size: 28 x 40 mm
Colors: Multicolor
Face value: 6 Russian kopek
Print run: 4,000,000