1982 Sc 5231-5236 18th International Ornithological Congress Scott 5050-5055

1982. 18th International Ornithological Congress.
Catalog numbers: Scott 5050-5055, Standard Collection 5231-5236, Michel 5181-5186, Yvert 4913-4918.
Condition: MNHOG.
Issued on: June 10, 1982.
Perforation: comb 12 x 12¼.
Printing: Offset lithography.
Size: 30 x 42 mm.
Colors: Multicolor.
Face value: 2 Russian kopek; 4 Russian kopek; 6 Russian kopek; 10 Russian kopek; 15 Russian kopek; 32 Russian kopek.
Quantity: 9,000,000; 6,900,000; 6,900,000; 6,800,000; 5,800,000; 5,500,000.