1980 Sc 5073-5075 Moscow Bridges Scott 4892-4894

1980. Moscow Bridges.
Catalogs: Scott 4892-4894, Standard Collection 5073-5075, Michel 5023-5025, Yt 4761-4763.
Issued on: December 23, 1980.
Perforation: comb 11½ x 12.
Printing: Photogravure and Recess.
Size: 52 x 37 mm.
Colors: Multicolor.
Face value: 4 Russian kopek; 6 Russian kopek; 15 Russian kopek.
Quantity: 5,700,000; 5,100,000; 4,700,000.