1968 Sc 3591. Navy of the USSR. Scott 3512

1968. Navy of the USSR.
Catalogs: Scott 3512, Standard Collection 3591, Michel 3540, Yt 3406.
Issued on: 1968-09-30.
Perforation: comb 12 x 12½
Printing: Photogravure
Size: 37 x 26 mm
Colors: Blue, dark-blue and red
Face value: 6 Russian kopek
Print run: 4,000,000