1986 Sc 5636-5640 Butterflies Scott 5435-5439

1986. Butterflies.
Catalogs: Scott 5435-5439, Standard Collection 5636-5640, Michel 5584-5588, Yt 5285-5289.
Issued on: March 18, 1986.
Perforation: comb 12.
Printing: Offset lithography.
Size: 40 x 28 mm.
Colors: Multicolor.
Face value: 4 Russian kopek; 5 Russian kopek; 10 Russian kopek; 15 Russian kopek; 20 Russian kopek.
Quantity: 6,500,000; 6,500,000; 5,300,000; 4,200,000; 3,200,000.