1966 Sc 3360-3361. Space Achievments. Scott 3288-3289

1966. Space Achievments.
Catalogs: Scott 3288-3289, Standard Collection 3360-3361, Michel 331-3312, Yt 3188-3189.
Issued on: 1966-12-29.
Perforation: comb 12 x 11¾
Printing: Photogravure
Size: 37 x 52 mm
Colors: Multicolor
Face value: 6 Russian kopek
Print run: 4,000,000