1986 Sc 5675-5678 UNESCO Programmes in USSR Scott 5474-5478

1986. UNESCO Programmes in USSR.
Catalogs: Scott 5474-5478, Standard Collection 5675-5678, Michel 5623-5626, Yt 5323-5326.
Issued on: July 15, 1986.
Perforation: comb 11½.
Printing: Photogravure.
Size: 28 x 40 mm.
Colors: Multicolor.
Face value: 5 Russian kopek; 10 Russian kopek; 15 Russian kopek; 32 Russian kopek.
Quantity: 2,950,000; 2,550,000; 2,550,000; 2,350,000.