1981 Sc 5153-5157 Song Birds Scott 4972-4976

1981. Song Birds.
Catalog numbers: Scott 4972-4976, Standard Collection 5153-5157, Michel 5103-5107, Yvert 4838-4842.
Condition: MNHOG.
Issued on: August 20, 1981.
Perforation: comb 12½ x 12.
Printing: Offset lithography.
Size: 30 x 42 mm.
Colors: Multicolor.
Face value: 6 Russian kopek; 10 Russian kopek; 15 Russian kopek; 20 Russian kopek; 32 Russian kopek.
Quantity: 8,400,000; 6,900,000; 5,900,000; 4,900,000; 4,700,000.