1978 Sc 4780-4783 International Space Cooperation Scott 4665-4668

1978. International Space Cooperation.
Catalog numbers: Scott 4665-4668, Standard Collection 4780-4783, Michel 4730-4733, Yvert 4487-4490.
Condition: MNHOG.
Issued on: June 23, 1978.
Perforation: comb 12 x 12½.
Printing: Offset lithography.
Size: 30 x 42 mm.
Colors: Multicolor.
Face value: 4*10 Russian kopek.
Quantity: 5,800,000; 6,300,000; 6,600,000; 5,800,000.