1975 Sc 4426-4431. Expo 75. Scott 4343-4348

$2.75

1975. Expo 75.
Catalogs: Scott 4343-4348, Standard Collection 4426-4431, Michel 4376-4381, Yt 4161-4166.
Issued on: 1975-07-18.
Perforation: comb 11½
Printing: Photogravure
Size: 50 x 50 mm
Colors: Multicolor
Face value: 3 Russian kopek; 4 Russian kopek; 6 Russian kopek; 10 Russian kopek; 16 Russian kopek; 20 Russian kopek
Print run: 8,300,000; 7,300,000; 6,900,000; 6,600,000; 5,650,000; 4,400,000